JUMO diraTRON/diraVIEW compact controller

Register map(s) for this device, each at the trust rung it earned. Addresses are 0-based as on the wire. Word order and scaling are confirmed at the hardware-verified rung and at no rung below it.

interop-verified

Read + decoded cleanly over a real network vs an independent third-party Modbus test server (transport and framing; reads are remapped into the server's register window, so the map's own addresses are NOT exercised). Does NOT prove word order/scaling against the actual device.

point	address (0-based)	type	scale
analog_input	28672	F32LE	1
min_value	28674	F32LE	1
max_value	28676	F32LE	1
tara_value	28678	F32LE	1
math_result_1	28680	F32LE	1
math_result_2	28682	F32LE	1
math_result_3	28684	F32LE	1
math_result_4	28686	F32LE	1
controller_setpoint_value	28688	F32LE	1
controller_actual_value	28690	F32LE	1
control_deviation	28692	F32LE	1
output_level_display	28694	F32LE	1
setpoint_value_1	28696	F32LE	1
setpoint_value_2	28698	F32LE	1
setpoint_value_3	28700	F32LE	1
setpoint_value_4	28702	F32LE	1
ramp_end_value	28704	F32LE	1
current_ramp_setpoint_value	28706	F32LE	1
ext_analog_input_1	28708	F32LE	1
ext_analog_input_2	28710	F32LE	1
timer_run_time	28716	F32LE	1
timer_remaining_running_time	28718	F32LE	1
timer_value	28720	F32LE	1
operating_time	28756	F32LE	1
limit_value_monitoring_functions	27984	U16	1
timer_status_word	27985	U16	1
digital_outputs	27986	U16	1
digital_control_signals	27987	U16	1
digital_inputs	27988	U16	1
external_digital_inputs	27989	U16	1
controller_outputs	27990	U16	1

link settings as documented (unverified): RTU/TCP; baud 9600/19200/38400/115200; FC 03,04,06,16; Simultaneous access by several Modbus masters (clients) is not supported by the device (server).

bench facts as documented (unverified)

terminals	RxD/TxD+ (terminal 11), RxD/TxD- (terminal 12)
termination	terminating resistors are required at the beginning and end of an RS485 transmission path.
shield/ground	A twisted connecting cable with shielding must be used to connect the RS485 interface. To avoid transmission errors, only the signals listed above and, if necessary, GND may be routed in the connecting cable.
max registers/read	127
response timeout	1000 ms
broadcast	supported
sentinel values	1.0 x 10^37: Measuring range underflow, 2.0 x 10^37: Measuring range overflow, 3.0 x 10^37: Value invalid, 4.0 x 10^37: Division by zero, 5.0 x 10^37: Math error, 6.0 x 10^37: Error: terminal temperature/compensation signal, 7.0 x 10^37: Probe short circuit, 8.0 x 10^37: Probe break
doc revision	V5.00/EN/00688816/2024-04-10

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

confirmed: Baud rates [9600, 19200, 38400, 115200] — confirmed by JUMO diraTRON 104/108/116/132 Operating Manual and Compact Controllers Overview
confirmed: Framing [RTU, TCP] — confirmed by JUMO diraTRON 104/108/116/132 Operating Manual
confirmed: Function codes [3, 4, 6, 16] — confirmed by JUMO diraTRON/diraVIEW Interface Description
confirmed: Parity N, Stop bits 1 — confirmed by JUMO diraTRON 104/108/116/132 Operating Manual
confirmed: Terminals RxD/TxD+ (terminal 11), RxD/TxD- (terminal 12) — confirmed by JUMO diraTRON Compact Controllers Overview
confirmed: Sentinels (1.0 x 10^37: Measuring range underflow, 2.0 x 10^37: Measuring range overflow, etc.) — confirmed by JUMO diraTRON/diraVIEW Interface Description
confirmed: Register addresses (analog_input @ 28672, min_value @ 28674, max_value @ 28676, tara_value @ 28678, math_result_1 @ 28680, math_result_2 @ 28682, math_result_3 @ 28684, math_result_4 @ 28686, controller_setpoint_value @ 28688, controller_actual_value @ 28690, control_deviation @ 28692, output_level_display @ 28694, setpoint_value_1 @ 28696, setpoint_value_2 @ 28698, setpoint_value_3 @ 28700, setpoint_value_4 @ 28702, ramp_end_value @ 28704, current_ramp_setpoint_value @ 28706, ext_analog_input_1 @ 28708, ext_analog_input_2 @ 28710, timer_run_time @ 28716, timer_remaining_running_time @ 28718, timer_value @ 28720, operating_time @ 28756, limit_value_monitoring_functions @ 27984, timer_status_word @ 27985, digital_outputs @ 27986, digital_control_signals @ 27987, digital_inputs @ 27988, external_digital_inputs @ 27989, controller_outputs @ 27990) — confirmed by JUMO diraTRON/diraVIEW Interface Description

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.
interop-verified — Read + decoded cleanly over a real network vs an independent third-party Modbus test server (transport and framing; reads are remapped into the server's register window, so the map's own addresses are NOT exercised). Does NOT prove word order/scaling against the actual device.
simulator-verified — Decoded correctly against a protocol emulator seeded with known-true values — catches word-order/scaling errors vs the emulator, not the physical device.
hardware-verified x1 — Matched a real device with operator-attested readings as ground truth — the only rung that confirms word order + scaling on the wire.

If your device isn't here, upload its register map. Generation is free, and the connector keeps the rung it earns under testing.

To prove a connector against your own device, order hardware verification. If it doesn't verify, you don't pay.

Platform builders can license the verified library: machine-readable maps, the firmware matrix, API access.