Shimaden SR23 controller (needs comms option)

Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.

coherence-checked

Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.

point	address (0-based)	type	scale	unit
S_CODE1	64	U16	1
S_CODE2	65	U16	1
S_CODE3	66	U16	1
S_CODE4	67	U16	1
PV_W	256	I16	1
SV_W	257	I16	1
OUT1_W	258	I16	0.1	%
OUT2_W	259	I16	0.1	%
EXE_FLG	260	U16	1
EV_FLG	261	U16	1
SV_No.	262	I16	1
EXE_PID	263	I16	1
REM_W	264	I16	1
HB_W	265	I16	0.1	A
HL_W	266	I16	0.1	A
DI_FLG	267	U16	1
UNIT	272	U16	1
RANGE	273	I16	1
CJ	274	U16	1
DP	275	U16	1
SC_L	276	I16	1
SC_H	277	I16	1
DPFLG	278	U16	1
DES	321	I16	1
POSI	322	I16	1
SV_No.	384	I16	1
SV_0N0	385	I16	1
OUT1_W	386	I16	1	%
OUT2_W	387	I16	1
AT	388	U16	1
MAN	389	U16	1
STBY	390	U16	1
REM	391	I16	1
ESV	393	I16	1
STOP	395	I16	1
COM	396	U16	1
COMDI	397	U16	1
AT	580	U16	1
MAN	581	U16	1
STBY	582	U16	1
STOP	587	I16	1
PV1	640	I16	1
PV2	641	I16	1
SV1	768	I16	1
SV2	769	I16	1
SV3	770	I16	1
SV4	771	I16	1
SV5	772	I16	1
SV6	773	I16	1
SV7	774	I16	1
SV8	775	I16	1
SV9	776	I16	1
SV10	777	I16	1
SV_L	778	I16	1
SV_H	779	I16	1
RAMP_UP	780	I16	1
RAMP_DW	781	I16	1
RAMP_UNT	782	U16	1
RAMP_RTE	783	U16	1
REM_L	788	I16	1
REM_H	789	I16	1
REM_B	790	I16	1
REM_F	791	I16	1	sec
REM_T	792	U16	1
REM_PID	793	I16	1
REM_MD	794	U16	1
REM_RTO	799	I16	1
REM_SQ	802	U16	1
REM_LC	803	I16	1	%
CS_L	809	I16	1
CS_H	810	I16	1
CFIL	812	I16	1
TUNE_D	814	U16	1
Hunting width	815	I16	1	%
EV1_LSRC/LOG1	896	U16	1
EV1_LSRC/LOG2	897	U16	1
EV1_LMD	898	U16	1
EV2_LSRC/LOG1	900	U16	1
EV2_LSRC/LOG2	901	U16	1
EV2_LMD	902	U16	1
EV3_LSRC/LOG1	904	U16	1
EV3_LSRC/LOG2	905	U16	1
EV3_LMD	906	U16	1
DO1_LSRC/LOG1	908	U16	1
DO1_LSRC/LOG2	909	U16	1
DO1_LMD	910	U16	1
DO2_LSRC/LOG1	912	U16	1
DO2_LSRC/LOG2	913	U16	1
DO2_LMD	914	U16	1
DO3_LSRC/LOG1	916	U16	1
DO3_LSRC/LOG2	917	U16	1
DO3_LMD	918	U16	1
DO4_SRC1	920	U16	1
DO4_LMD	922	U16	1
DO4_LTM	923	I16	1	s
DO5_SRC1	924	U16	1
DO5_LMD	926	U16	1
DO5_LTM	927	I16	1	s
PB1	1024	I16	1	%
IT1	1025	I16	1	Sec
DT1	1026	I16	1	Sec
MR1	1027	I16	1	%
DF1	1028	I16	1	Unit
O11_L	1029	I16	1	%
O11_H	1030	I16	1	%
SF1	1031	I16	1
PB2	1032	I16	1	%
IT2	1033	I16	1	Sec
DT2	1034	I16	1	Sec
MR2	1035	I16	1	%
DF2	1036	I16	1	Unit
O12_L	1037	I16	1	%
O12_H	1038	I16	1	%
SF2	1039	I16	1
PB3	1040	I16	1	%
IT3	1041	I16	1	Sec
DT3	1042	I16	1	Sec
MR3	1043	I16	1	%
DF3	1044	I16	1	Unit
O13_L	1045	I16	1	%
O13_H	1046	I16	1	%
SF3	1047	I16	1
PB4	1048	I16	1	%
IT4	1049	I16	1	Sec
DT4	1050	I16	1	Sec
MR4	1051	I16	1	%
DF4	1052	I16	1	Unit
O14_L	1053	I16	1	%
O14_H	1054	I16	1	%
SF4	1055	I16	1
PB5	1056	I16	1	%
IT5	1057	I16	1	Sec
DT5	1058	I16	1	Sec
MR5	1059	I16	1	%
DF5	1060	I16	1	Unit
O15_L	1061	I16	1	%
O15_H	1062	I16	1	%
SF5	1063	I16	1
PB6	1064	I16	1	%
IT6	1065	I16	1	Sec
DT6	1066	I16	1	Sec
MR6	1067	I16	1	%
DF6	1068	I16	1	Unit
O16_L	1069	I16	1	%
O16_H	1070	I16	1	%
SF6	1071	I16	1
PB7	1072	I16	1	%
IT7	1073	I16	1	Sec
DT7	1074	I16	1	Sec
MR7	1075	I16	1	%
DF7	1076	I16	1	Unit
O17_L	1077	I16	1	%
O17_H	1078	I16	1	%
SF7	1079	I16	1
PB8	1080	I16	1	%
IT8	1081	I16	1	Sec
DT8	1082	I16	1	Sec
MR8	1083	I16	1	%
DF8	1084	I16	1	Unit
O18_L	1085	I16	1	%
O18_H	1086	I16	1	%
SF8	1087	I16	1
PB9	1088	I16	1	%
IT9	1089	I16	1	Sec
DT9	1090	I16	1	Sec
MR9	1091	I16	1	%
DF9	1092	I16	1	Unit
O19_L	1093	I16	1	%
O19_H	1094	I16	1	%
SF9	1095	I16	1
PB10	1096	I16	1	%
IT10	1097	I16	1	Sec
DT10	1098	I16	1	Sec
MR10	1099	I16	1	%
DF10	1100	I16	1	Unit
O10_L	1101	I16	1	%
O10_H	1102	I16	1	%
SF10	1103	I16	1
PB21	1120	I16	1	%
IT21	1121	I16	1	Sec
DT21	1122	I16	1	Sec
MR21/DB21	1123	I16	1	%
DF21	1124	I16	1	Unit
O21_L	1125	I16	1	%
O21_H	1126	I16	1	%
SF21	1127	I16	1
PB22	1128	I16	1	%
IT22	1129	I16	1	Sec
DT22	1130	I16	1	Sec
MR22/DB22	1131	I16	1	%
DF22	1132	I16	1	Unit
O22_L	1133	I16	1	%
O22_H	1134	I16	1	%
SF22	1135	I16	1
PB23	1136	I16	1	%
IT23	1137	I16	1	Sec
DT23	1138	I16	1	Sec
MR23/DB23	1139	I16	1	%
DF23	1140	I16	1	Unit
O23_L	1141	I16	1	%
O23_H	1142	I16	1	%
SF23	1143	I16	1
PB24	1144	I16	1	%
IT24	1145	I16	1	Sec
DT24	1146	I16	1	Sec
MR24/DB24	1147	I16	1	%
DF24	1148	I16	1	Unit
O24_L	1149	I16	1	%
O24_H	1150	I16	1	%
SF24	1151	I16	1
PB25	1152	I16	1	%
IT25	1153	I16	1	Sec
DT25	1154	I16	1	Sec
MR25/DB25	1155	I16	1	%
DF25	1156	I16	1	Unit
O25_L	1157	I16	1	%
O25_H	1158	I16	1	%
SF25	1159	I16	1
PB26	1160	I16	1	%
IT26	1161	I16	1	Sec
DT26	1162	I16	1	Sec
MR26/DB26	1163	I16	1	%
DF26	1164	I16	1	Unit
O26_L	1165	I16	1	%
O26_H	1166	I16	1	%
SF26	1167	I16	1
PB27	1168	I16	1	%
IT27	1169	I16	1	Sec
DT27	1170	I16	1	Sec
MR27/DB27	1171	I16	1	%
DF27	1172	I16	1	Unit
O27_L	1173	I16	1	%
O27_H	1174	I16	1	%
SF27	1175	I16	1
PB28	1176	I16	1	%
IT28	1177	I16	1	Sec
DT28	1178	I16	1	Sec
MR28/DB28	1179	I16	1	%
DF28	1180	I16	1	Unit
O28_L	1181	I16	1	%
O28_H	1182	I16	1	%
SF28	1183	I16	1
PB29	1184	I16	1	%
IT29	1185	I16	1	Sec
DT29	1186	I16	1	Sec
MR29/DB29	1187	I16	1	%
DF29	1188	I16	1	Unit
O29_L	1189	I16	1	%
O29_H	1190	I16	1	%
SF29	1191	I16	1
PB210	1192	I16	1	%
IT210	1193	I16	1	Sec
DT210	1194	I16	1	Sec
MR210/DB210	1195	I16	1	%
DF210	1196	I16	1	Unit
O210_L	1197	I16	1	%
O210_H	1198	I16	1	%
SF210	1199	I16	1
ZSP1	1216	I16	1
ZSP2	1217	I16	1
ZSP3	1218	I16	1
ZSP4	1219	I16	1
ZSP5	1220	I16	1
ZSP6	1221	I16	1
ZSP7	1222	I16	1
ZSP8	1223	I16	1
ZSP9	1224	I16	1
ZSP10	1225	I16	1
ZHYS	1226	I16	1	Unit
ZPID	1227	U16	1
ZSP21	1228	I16	1
ZSP22	1229	I16	1
ZSP23	1230	I16	1
ZSP24	1231	I16	1
ZSP25	1232	I16	1
ZSP26	1233	I16	1
ZSP27	1234	I16	1
ZSP28	1235	I16	1
ZSP29	1236	I16	1
ZSP210	1237	I16	1
ZHYS2	1238	I16	1	Unit
ZPID2	1239	U16	1
EV1_MD	1280	U16	1
EV1_SP	1281	I16	1
EV1_DF	1282	I16	1	Unit
EV1_STB	1283	U16	1
EV1_TM	1284	I16	1	Sec
EV1_CHR	1285	U16	1
EV1_STEV	1286	U16	1
EV2_MD	1288	U16	1
EV2_SP	1289	I16	1
EV2_DF	1290	I16	1	Unit
EV2_STB	1291	U16	1
EV2_TM	1292	I16	1	Sec
EV2_CHR	1293	U16	1
EV2_STEV	1294	U16	1
EV3_MD	1296	U16	1
EV3_SP	1297	I16	1
EV3_DF	1298	I16	1	Unit
EV3_STB	1299	U16	1
EV3_TM	1300	I16	1	Sec
EV3_CHR	1301	U16	1
EV3_STEV	1302	U16	1
DO1_MD	1304	U16	1
DO1_SP	1305	I16	1
DO1_DF	1306	I16	1	Unit
DO1_STB	1307	U16	1
DO1_TM	1308	I16	1	Sec
DO1_CHR	1309	U16	1
DO1_STEV	1310	U16	1
DO2_MD	1312	U16	1
DO2_SP	1313	I16	1
DO2_DF	1314	I16	1	Unit
DO2_STB	1315	U16	1
DO2_TM	1316	I16	1	Sec
DO2_CHR	1317	U16	1
DO2_STEV	1318	U16	1
DO3_MD	1320	U16	1
DO3_SP	1321	I16	1
DO3_DF	1322	I16	1	Unit
DO3_STB	1323	U16	1
DO3_TM	1324	I16	1	Sec
DO3_CHR	1325	U16	1
DO3_STEV	1326	U16	1
DO4_MD	1328	U16	1
DO4_SP	1329	I16	1
DO4_DF	1330	I16	1	Unit
DO4_STB	1331	U16	1
DO4_TM	1332	I16	1	Sec
DO4_CHR	1333	U16	1
DO4_STEV	1334	U16	1
DO5_MD	1336	U16	1
DO5_SP	1337	I16	1
DO5_DF	1338	I16	1	Unit
DO5_STB	1339	U16	1
DO5_TM	1340	I16	1	Sec
DO5_CHR	1341	U16	1
DO5_STEV	1342	U16	1
DO6_MD	1344	U16	1
DO6_SP	1345	I16	1
DO6_DF	1346	I16	1	Unit
DO6_STB	1347	U16	1
DO6_TM	1348	I16	1	Sec
DO6_CHR	1349	U16	1
DO6_STEV	1350	U16	1
DO7_MD	1352	U16	1
DO7_SP	1353	I16	1
DO7_DF	1354	I16	1	Unit
DO7_STB	1355	U16	1
DO7_TM	1356	I16	1	Sec
DO7_CHR	1357	U16	1
DO7_STEV	1358	U16	1
DO8_MD	1360	U16	1
DO8_SP	1361	I16	1
DO8_DF	1362	I16	1	Unit
DO8_STB	1363	U16	1
DO8_TM	1364	I16	1	Sec
DO8_CHR	1365	U16	1
DO8_STEV	1366	U16	1
DO9_MD	1368	U16	1
DO9_SP	1369	I16	1
DO9_DF	1370	I16	1	Unit
DO9_STB	1371	U16	1
DO9_TM	1372	I16	1	Sec
DO9_CHR	1373	U16	1
DO9_STEV	1374	U16	1
DO10_MD	1376	U16	1
DO10_SP	1377	I16	1
DO10_DF	1378	I16	1	Unit
DO10_STB	1379	U16	1
DO10_TM	1380	I16	1	Sec
DO10_CHR	1381	U16	1
DO10_STEV	1382	U16	1
DO11_MD	1384	U16	1
DO11_SP	1385	I16	1
DO11_DF	1386	I16	1	Unit
DO11_STB	1387	U16	1
DO11_TM	1388	I16	1	Sec
DO11_CHR	1389	U16	1
DO11_STEV	1390	U16	1
DO12_MD	1392	U16	1
DO12_SP	1393	I16	1
DO12_DF	1394	I16	1	Unit
DO12_STB	1395	U16	1
DO12_TM	1396	I16	1	Sec
DO12_CHR	1397	U16	1
DO12_STEV	1398	U16	1
DO13_MD	1400	U16	1
DO13_SP	1401	I16	1
DO13_DF	1402	I16	1	Unit
DO13_STB	1403	U16	1
DO13_TM	1404	I16	1	Sec
DO13_CHR	1405	U16	1
DO13_STEV	1406	U16	1
DI1	1408	U16	1
DI2	1409	U16	1
DI3	1410	U16	1
DI4	1411	U16	1
DI5	1412	U16	1
DI6	1413	U16	1
DI7	1414	U16	1
DI8	1415	U16	1
DI9	1416	U16	1
DI10	1417	U16	1
HBS	1424	I16	1	A
HBL	1425	I16	1	A
HB_MD	1426	U16	1
HB_SEL	1431	U16	1
AO1_MD	1440	U16	1
AO1_L	1441	I16	1
AO1_H	1442	I16	1
AO2MD	1444	U16	1
AO2_L	1445	I16	1
AO2_H	1446	I16	1
COM MEM	1456	U16	1
ACTMD	1536	U16	1
01_CYC	1537	I16	1	Sec
02_CYC	1540	I16	1	Sec
ACTMD2	1543	U16	1
OUT1_LMT	1544	I16	1	%/s
OUT2_LMT	1545	I16	1	%/s
ATP	1546	I16	1	Unit
KLOCK	1547	U16	1
OUT_MD	1556	U16	1
O1ST_PR	1561	U16	1
ERROUT1	1562	I16	1
O2ST_PR	1565	U16	1
ERROUT2	1566	I16	1
MORTOR_TM	1615	I16	1	s
SER_FB	1617	U16	1
SER_DB	1618	I16	1	%
MAN_ST_DRC	1620	U16	1
ZS_MD	1621	U16	1
DI_SRv_PRE1	1642	I16	1	%
DI_SRv_PRE2	1643	I16	1	%
DI_SRv_PRE3	1644	I16	1	%
DI_SRv_PRE4	1645	I16	1	%
DI_SRv_PRE5	1646	I16	1	%
DI_SRv_PRE6	1647	I16	1	%
DI_SRv_PRE7	1648	I16	1	%
PV_BS1	1792	I16	1
PV_B1	1793	I16	1	Unit
PV_F1	1794	I16	1
CJ	1798	U16	1
SCO_MD	1807	I16	1
PV_BS3	1812	I16	1
PV_B3	1813	I16	1	Unit
PV_F3	1814	I16	1
A1	1824	I16	1	%
B1	1825	I16	1	%
A2	1826	I16	1	%
B2	1827	I16	1	%
A3	1828	I16	1	%
B3	1829	I16	1	%
A4	1830	I16	1	%
B4	1831	I16	1	%
A5	1832	I16	1	%
B5	1833	I16	1	%
A6	1834	I16	1	%
B6	1835	I16	1	%
A7	1836	I16	1	%
B7	1837	I16	1	%
A8	1838	I16	1	%
B8	1839	I16	1	%
A9	1840	I16	1	%
B9	1841	I16	1	%
A10	1842	I16	1	%
B10	1843	I16	1	%
A11	1844	I16	1	%
B11	1845	I16	1	%
APPR	1846	U16	1
LCUT	1847	I16	1	%
SQRT	1848	U16	1

link settings as documented (unverified): RTU/ASCII; default 9600 8E1; unit ID 1; FC 03,06; Supports both SHIMADEN standard protocol and MODBUS communication protocol.

⚠ To prevent uncontrollable situations such as host program runaway, communication between the SR23 and the host can be forcibly terminated by holding down the ENT and STEP keys simultaneously for at least three seconds. — Starkest reads only; we never write a control register.

bench facts as documented (unverified)

terminals	RS-232C: SD(3), RD(2), SG(5) on host to RD(14), SD(13), SG(12) on controller. RS-485: +(13), -(14), SG(12)
A/B polarity	Mark state: - terminal < + terminal, Space state: - terminal > + terminal
termination	Attach a terminator of about 1/2W 120Ω to the endmost terminal (between + and - terminals)
shield/ground	FG
wiring notes	RS-232C max distance 15m, RS-485 max distance 500m. RS-485 supports up to 31 devices.
broadcast	supported
sentinel values	Sc.HH/Cj.HH/b = 7FFFH, Sc.LL/Cj.LL = 8000H, HBL/HLA display = 7FFFH, HB current value when output is OFF and HL current value when output is ON = 7FFEH
protocol notes	In tri-state control, a delay of about 1 msec (max) after end of transmission of the end bit of the end character up to the return from high impedance is generated. It sometimes takes about 400 ms to process commands in the case of the write command.
model register	0040
identification notes	Series codes 1 to 4 are located at registers 0040H to 0043H (64 to 67).
doc revision	MSR23-E04-B, Feb. 2015

field reports — community-sourced, unverified (checked 2026-06-11)

confirmed: comms defaults (baud rates [2400, 4800, 9600, 19200], default baud 9600, default unit ID 1, framing [RTU, ASCII], parity E, stop bits 1, function codes [3, 6]) — confirmed by the SR23 Series Digital Controller Instruction Manual (Detailed version) MSR23-E04-B
confirmed: control_warning (forcibly terminating communication by holding down ENT and STEP keys for at least 3 seconds) — confirmed by the SR23 Series Digital Controller Instruction Manual (Detailed version) MSR23-E04-B
confirmed: identification (model register 0040H to 0043H for series codes 1 to 4) — confirmed by the SR23 Series Digital Controller Instruction Manual (Detailed version) MSR23-E04-B
confirmed: physical (RS-232C max distance 15m, RS-485 max distance 500m, RS-485 supports up to 31 devices, polarity, terminals, and 120 ohm termination) — confirmed by the SR23 Series Digital Controller Instruction Manual (Detailed version) MSR23-E04-B
confirmed: quirks (broadcast support, tri-state delay of about 1 msec max, write command processing delay up to 400 ms, and sentinels like 7FFFH, 8000H, 7FFEH) — confirmed by the SR23 Series Digital Controller Instruction Manual (Detailed version) MSR23-E04-B
confirmed: register map summary (pv_value @ 256, execution_sv_value @ 257, control_output_1 @ 258, control_output_2 @ 259, operation_flag @ 260, event_output_flag @ 261, execution_sv_no @ 262, execution_pid_no @ 263, remote_input_value @ 264, hb_current_value @ 265, hl_current_value @ 266, di_input_state_flag @ 267, ch1_pv_measuring_range @ 640, ch2_pv_measuring_range @ 641, sv_no_1 @ 768 to sv_no_10 @ 777) — confirmed by the SR23 Series Digital Controller Instruction Manual (Detailed version) MSR23-E04-B

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

generated — A prompt produced it. Unproven — anyone can regenerate this.
structure-verified — Decode path is structurally sound (addresses, widths, finite values). Does NOT prove word order or scaling.
coherence-checked — Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.
hardware-verified (software-key) x1 — Matched a real device with operator-attested readings as ground truth — the only rung that confirms word order + scaling on the wire.

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