iSMA-B-MINI/MIX Modbus User Manual
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DMP262en | 1st Issue rev. 8 | 05/2022
page 34 of 107
The high byte contains the module firmware version multiplied by 10.
For example:
In the 30001 register, number 12810
10
= 0x320A
16
, which means that it is module MIX18
(0x32) with firmware in version 1.0 (0x0A
16
= 10
10
).
6.2 Module Address (30002)
This register contains information about the address of the Modbus module. This
address is set with switches S1 and S2 (see section
6.3 Baud Rate and Protocol (30003)
The register contains information about the baud rate and type of protocol in accordance
with the table below. This register reflects the state of S3 switch.
Baud rate
Protocol
Bit 0
Bit 1
Bit 2
Baud rate
Bit 3
Bit 4
Protocol
0
0
0
User defined
0
0
Modbus RTU
0
0
1
76800
0
1
Modbus ASCII
0
1
0
4800
1
0
BACnet Master
0
1
1
9600
1
1
BACnet Slave
1
0
0
19200
1
0
1
38400
1
1
0
57600
1
1
1
115200
Table 9. Baud rate and protocol
6.4 Counter of Received Messages (30004)
The 32-bit register with the number of valid Modbus messages received by the module,
which was powered up last. The value is reset after the power cycle or after changing
transmission parameters (speed, stop bits, parity, etc.).
6.5 Counter of Error Messages (30006)
The 32-bit register with the number of error Modbus messages received by the module,
which was powered up last. The value is reset after the power cycle or after changing
transmission parameters (speed, stop bits, parity, etc.).