MSA 5100-03-IT, Operating Manual

Page: 55 / 68

Command 131: Set Alarm Level
Used to set the following internal device parameters (variables), with appropriate index. Reading of these parameters is
achieved using Command 132.
Index Parameter Read/Write
1 Alarm Level Setpoint R/W
2 Warning Level Setpoint R/W
3 Calibration Gas Value R/W
4 Force Gas Value R/W
5 Maximum Gas Value Read
6 Minimum Gas Value Read
7 Display Gas Value During Calibration Read
8 Range Read
9 Force Trouble Condition R/W
Request Data Bytes:
Byte Format Description
0-1 Unsigned-16 Index to select parameter as per table above
2-5 Float Value to be written to parameter
Response Data Bytes:
Byte Format Description
0 Unsigned-8 Response Code
1 Unsigned-8 Device Status
2-3 Unsigned-16 Index of selected parameter
4-7 Float New value of selected parameter
Command 132: Read Device Values (using index)
Used to read the values of parameters in table shown in Command 131, with appropriate index.
Request Data Bytes:
Byte Format Description
0-1 Unsigned-16 Index to select parameter as per table above
Response Data Bytes:
Byte Format Description
0 Unsigned-8 Response Code
1 Unsigned-8 Device Status
2-3 Unsigned-16 Index of selected parameter
4-7 Float Value of parameter
SMC 5100-XX-IT Toxic Gas Detector Module 55
US 13 HART