SfAR-S-8DI8DO User Manual
www.ismacontrolli.com
DMP275en | 3rd Issue rev. 2 | 05/2022
page 12 of 25
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4.6 Restoring Default Configuration
To restore the default configuration, follow the steps below:
Turn the power off;
Turn the switch SW6 on;
Turn the power on;
When power and the communication LED are lit, turn the switch SW6 off.
WARNING!
After restoring the default configuration, all values stored in the registers are
cleared as well.
Configuration Registers
Modbus Address
Decimal Address
Hex Address
Name
Values
40003
2
0x02
Baud Rate
0 – 2400
1 – 4800
2 – 9600
3 – 19200
4 – 38400
5 – 57600
6 – 115200
other – value * 10
40005
4
0x04
Parity
0 – none
1 – odd
2 – even
3 – always 0
4 – always 1
40004
3
0x03
Stop Bits
1 – one stop bit
2 – two stop bits
40004
3
0x03
Data Bits
7 – 7 data bits
8 – 8 data bits
40006
5
0x05
Response Delay
Time in ms
40007
6
0x06
Modbus Mode
0 – RTU
1 – ASCII
Table 6. Configuration registers
4.7 Watchdog
This 16-bits register specifies the time in milliseconds to watchdog reset. If the module
does not receive any valid message within that time, all digital and analog outputs will be
set to the default state.
This feature is useful if there is an interruption in data transmission and for security
reasons. Output states must be set to the appropriate state in order to reassure the
safety of persons or property.
The default value is 0 milliseconds, which means the watchdog function is disabled.
