Yokogawa Touch Screen GP20 - Manual (Page 339)

4-19
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
Math Channel Data and Status Information
Data Register Data Type
Lower bytes of the computed data of channel A001 305001 32-bit signed integer
Higher bytes of the computed data of channel A001 305002
| |
Lower bytes of the computed data of channel A100 305199
Higher bytes of the computed data of channel A100 305200
• Register configuration of computed data
Channel A001 example
Higher bytes Lower bytes
Register 305002
Channel A001 computed data
Register 305001
• There is no decimal place information.
Lower bytes of the computed data of channel A001 305201 32-bit floating point
Higher bytes of the computed data of channel A001 305202
| |
Lower bytes of the computed data of channel A100 305399
Higher bytes of the computed data of channel A100 305400
• There is no decimal place information.
Channel A001 computed data 305401 16-bit signed integer
| |
Channel A100 computed data 305500
• There is no decimal place information.
Channel A001 status information 305501 16-bit signed integer
| |
Channel A100 status information 305600
• Status register configuration
This is the same as that of the I/O channel data status information.
4.5 Modbus Function and Register Assignments