Yokogawa Touch Screen GP20 - Manual (Page 343)

4-23
IM 04L51B01-01EN
Using Modbus Functions (Communicating with Modbus devices)
1
2
3
4
5
App
I/O Channel Data Input Register Data Type
• There is no decimal place information.
Error code Meaning
0 No error
1 Skip
2 +Over
3 –Over
4 +Burnout
5 –Burnout
6 A/D error
7 Invalid data
16 Computation error
17 Communication error
5 bits 4 bits
Status information Alarm list
0
Reserved
area
Error code
RJC error
A/D calibration
value error
0 0 0 0
Level 1
Level 2
Level 3
Level 4
2 bytes
Higher Lower
GX/GP Status
Data Register Description Data Type
Measuring 308001 0: Recording stopped
1: Recording
16-bit signed integer
Computing 308002 0: Computing stopped
1: Computing
Alarm activated 308003 0: No alarm
1: Alarm occurrence
E-mail started 308004 0: No e-mail transmission
1: E-mail transmission
available
Memory end 308005 0: Space available in the
internal memory or external
storage
1: Not much space in the
internal memory or external
storage
Screen login status 308006 0: No login
1: Logged in
Modbus communication
error
308007 0: Modbus master or client
command normal
1: Modbus master or client
command error
4.5 Modbus Function and Register Assignments