
iSMA-B-W0202 Modbus User Manual
version 1.2
Page 2 / 49
Introduction ............................................................................................................................................. 4
Revision history ............................................................................................................................................ 4
Safety rules ................................................................................................................................................... 5
Technical specifications ................................................................................................................................ 6
Dimension ..................................................................................................................................................... 7
Power supply connection .............................................................................................................................. 7
1.5.1
DC power connection ................................................................................................................................. 7
1.5.2
AC power connection ................................................................................................................................. 7
Connecting the communication bus .............................................................................................................. 8
LED Indication ............................................................................................................................................. 8
Grounding and shielding ............................................................................................................................... 9
RS485 Network Termination ........................................................................................................................ 9
Module configuration.................................................................................................................................... 9
Communication ........................................................................................................................................... 10
Special Inputs .............................................................................................................................................. 10
Digital Outputs ............................................................................................................................................ 11
Radio Settings ............................................................................................................................................. 11
Radio Status ................................................................................................................................................ 12
Configuration registers ......................................................................................................................... 13
Firmware version and module type (30001) ............................................................................................... 13
Counter of received messages (30004) ....................................................................................................... 13
Counter of error messages (30006) ............................................................................................................. 13
Counter of sent messages (30008) .............................................................................................................. 13
Up time (30012) .......................................................................................................................................... 13
Device actions (40001) ............................................................................................................................... 14
Modbus protocol type (40134) .................................................................................................................... 14
Modbus address (40135) ............................................................................................................................. 14
Baud rate (40136) ....................................................................................................................................... 14
Stop bits (40137) ......................................................................................................................................... 15
Data bits (40138) ........................................................................................................................................ 15
Parity bit (40139) ........................................................................................................................................ 15
Response delay time (40140) ...................................................................................................................... 15
Watchdog time (40141) ............................................................................................................................... 16
Watchdog for Radio .................................................................................................................................... 16
Radio configuration registers ............................................................................................................... 16
Radio TX Power (40242) ............................................................................................................................ 16
Radio Channel (40243) ............................................................................................................................... 16
Radio Baud Rate (40244) ............................................................................................................................ 18
Radio AESKEY (40249 – 40256) ............................................................................................................... 19
Radio Received Frames Counter (40257) ................................................................................................... 19
Radio ERROR Frames Counter (40259)..................................................................................................... 19
Radio Transmitted Frames Counter (40261) ............................................................................................... 19
Wireless Device Status (40263 – 40390) .................................................................................................... 20
Special inputs connections .................................................................................................................... 21
Connection of Special Input to measure voltage 0 – 10 V .......................................................................... 21
Connection of Special Input to measure temperature ................................................................................. 21
Connection of Special Input as a Digital Input (Dry Contact) .................................................................... 21
Special inputs MODBUS registers ....................................................................................................... 22
Status of Special Inputs working as Digital Inputs (30017) ........................................................................ 22
Special Input measure voltage 1 – 2 (30071, 30073) .................................................................................. 22
Special Input measure temperature 1 – 2 (30072, 30074) ........................................................................... 22
Special Input measure resistance 1 – 2 (30103-30104, 30105-30106) ....................................................... 22
Fast counter (40023-40024, 40025-40026) ................................................................................................. 23
Resetting counters values (40022) .............................................................................................................. 23
Special input configuration 1 – 2 (40151 – 40152) ..................................................................................... 24
Filter time of the Special Input 1 – 2 (40159 – 40160) ............................................................................... 24
Digital Outputs (relays) connections .................................................................................................... 25
Connecting a solenoid valve to the Digital Output ..................................................................................... 25
Connecting a resistive load to the Digital Output ....................................................................................... 25
Digital Outputs (relays) MODBUS registers ....................................................................................... 26