The Interface Solution Experts
17
TMZ
PC-Programmable MODBUS
Temperature Transmitter
Appendix A: TMZ MODBUS
Register Set
Table A-1 contains all of the MODBUS integer
registers supported by the TMZ. These registers
constitute both the 30000 and 40000 register set.
Table A-1.
MODBUS Register Table
Table A-2.
Status Word Table
Register
Variable
Read Description
0
PV
R
PV (integer)
1
SV
R
SV (integer)
2
PercentOfRange
R
Percent of range (integer)
3
ScaledPV
R
Scaled PV (integer)
4
LinearedPV
R
Linearised PV (integer)
5
ErrorStatus
R
TMZ Error / Status Word
256-257
PV
R
PV (floating point)
258-259
SV
R
SV (floating point)
260-261
PercentOfRange
R
Percent of Range (floating point)
262-263
ScaledPV
R
Scaled PV (floatpoint)
264-265
LinearedPV
R
Linearised PV (floating point)
266
ErrorStatus
R
TMZ Error / Status Word
Status Bit
Description
0
Configuration data checksum bad
1
Calibration data checksum bad
2
The configuration data is bad / illegal
3
The calibration data is bad
4
A division by zero error condition
5
RJC is broken
6
Microcontroller watchdog reset has occurred
7
A software watchdog error has occurred
8
Sensor wire 1 is broken (If broken wire is enabled)
9
Sensor wire 2 is broken (If broken wire is enabled)
10
Sensor wire 3 is broken (If broken wire is enabled)
11
Sensor wire 4 is broken (If broken wire is enabled)
12
Input is saturated
13
Hardware error has occurred (one of the ADCs is not working)
14
The calibration process is active
15
TMZ is off line