Watlow CLS200, MLS300 and CAS200 - Manual (Page 41)

Chapter 2: Modbus-RTU Protocol
Communications Specification 35
Relative and Absolute Modbus Addresses
In the tables on the following pages, absolute addresses are in decimal
and relative addresses are in hexidecimal. Absolute addresses include
the type of register. Refer to the absolute address to determine which
function to use to read or write values (see the Function Codes on page
26).
Relative addresses indicate the register offset from the first register of
the particular type. For example, the first register for the Derivative
parameter is at 40067, which is offset 66 (x42) registers from the
beginning of the holding registers at 40001.
Modbus-RTU Protocol Data Table
Number Description
Absolute
Address
Relative
Address in
Hex
Type
Number of
Registers
0 Proportional Band/Gain 40001 0000 UC MAX_CH * 2
1 Derivative Term 40067 0042 UC MAX_CH * 2
2 Integral Term 40133 0084 UI MAX_CH * 2
3 Input Type 40199 00C6 UC MAX_CH
4 Output Type 40265 0108 UC MAX_CH * 2
5 Setpoint 40331 014A SI MAX_CH
6 Process Variable 40364 016B SI MAX_CH
7 Output Filter 40397 018C UC MAX_CH * 2
8 Output Value 40463 01CE UI MAX_CH * 2
9 High Process Alarm Setpoint 40529 0210 SI MAX_CH
10 Low Process Alarm Setpoint 40562 0231 SI MAX_CH
11 Deviation Alarm Band Value 40595 0252 UC MAX_CH
12 Alarm Deadband 40628 0273 UC MAX_CH
13 Alarm_Status 40661 0294 UI MAX_CH
14 Not used 40694 02B5 33
15 Ambient Sensor Readings 40727 02D6 SI 2
16 Pulse Sample Time 40729 02D8 UC 1
17 High Process Variable 40730 02D9 SI MAX_CH
18 Low Process Variable 40763 02FA SI MAX_CH
19 Precision 40796 031B SC MAX_CH
20 Cycle Time 40829 033C UC MAX_CH
21 Zero Calibration 40895 037E UI 2
22 Full Scale Calibration 40896 037F UI 2
23 Not used 40897 0380 1
24 Not used 40898 0381 1
25 Digital Inputs 10899 0382 Bit MAX_DIGIN
26 Digital Outputs 00907 038A Bit MAX_DIGOUT