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.
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 |
|---|---|---|---|---|
| sv1 | 1 | I16 | 1 | |
| at_auto_reset | 3 | U16 | 1 | |
| out1_proportional_band | 4 | I16 | 1 | |
| out2_proportional_band | 5 | I16 | 1 | |
| integral_time | 6 | I16 | 1 | |
| derivative_time | 7 | I16 | 1 | |
| out1_proportional_cycle | 8 | I16 | 1 | |
| out2_proportional_cycle | 9 | I16 | 1 | |
| a1_value | 11 | I16 | 1 | |
| a2_value | 12 | I16 | 1 | |
| hb_heater_burnout_alarm_value | 15 | I16 | 1 | |
| la_loop_break_alarm_time | 16 | I16 | 1 | |
| la_loop_break_alarm_span | 17 | I16 | 1 | |
| set_value_lock | 18 | U16 | 1 | |
| sv_high_limit | 19 | I16 | 1 | |
| sv_low_limit | 20 | I16 | 1 | |
| sensor_correction_value | 21 | I16 | 1 | |
| overlap_dead_band | 22 | I16 | 1 | |
| scaling_high_limit | 24 | I16 | 1 | |
| scaling_low_limit | 25 | I16 | 1 | |
| decimal_point_place | 26 | U16 | 1 | |
| pv_filter_time_constant | 27 | I16 | 1 | |
| out1_high_limit | 28 | I16 | 1 | |
| out1_low_limit | 29 | I16 | 1 | |
| out1_on_off_hysteresis | 30 | I16 | 1 | |
| out2_action_mode | 31 | U16 | 1 | |
| out2_high_limit | 32 | I16 | 1 | |
| out2_low_limit | 33 | I16 | 1 | |
| out2_on_off_hysteresis | 34 | I16 | 1 | |
| a1_type | 35 | U16 | 1 | |
| a2_type | 36 | U16 | 1 | |
| a1_hysteresis | 37 | I16 | 1 | |
| a2_hysteresis | 38 | I16 | 1 | |
| a1_action_delay_time | 41 | I16 | 1 | |
| a2_action_delay_time | 42 | I16 | 1 | |
| control_output_off | 55 | U16 | 1 | |
| auto_manual_control | 56 | U16 | 1 | |
| manual_control_mv | 57 | I16 | 1 | |
| a1_energized_de_energized | 64 | U16 | 1 | |
| a2_energized_de_energized | 65 | U16 | 1 | |
| input_type | 68 | U16 | 1 | |
| direct_reverse_action | 69 | U16 | 1 | |
| at_bias | 71 | I16 | 1 | |
| arw_anti_reset_windup | 72 | I16 | 1 | |
| Key Lock | 111 | U16 | 1 | |
| Key operation change flag clearing | 112 | U16 | 1 | |
| PV reading | 128 | I16 | 1 | |
| OUT1 MV reading | 129 | I16 | 1 | |
| OUT2 MV reading | 130 | I16 | 1 | |
| Status flag reading | 133 | U16 | 1 |
⚠ Turn the power supply to the instrument off before wiring or checking it. Working on or touching the terminal with the power switched on may result in severe injury or death due to electric shock. — Starkest reads only; we never write a control register.
| terminals | 13 YA(-), 14 YB(+), 15 SG |
| A/B polarity | YA(-), YB(+) |
| termination | Do not connect the terminator to the communication line because each JCx-33A has built-in pull-up and pull-down resistors instead of a terminator. |
| shield/ground | Connect only one end of the shielded wire to the FG terminal so that current cannot flow to the shielded wire. |
| wiring notes | Recommended cable: OTSC-VB 2PX0.5SQ or equivalent (twisted pair cable). |
| max registers/read | 1 |
| inter-frame delay | 1000 ms |
| broadcast | supported |
| protocol notes | Up to 1,000,000 entries can be stored in memory. Frequent transmission is not recommended. |
| doc revision | No.JC3CE11 2013.01 |
⚠ disputed: inter_frame_delay_ms: 1000 — disputed by Shinko JCS/JCM/JCR/JCD-33A (C5) manual No.JC3CE11, which specifies standard Modbus RTU timing (data interval of 3.5 characters or less)
Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.
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