Bit floating point – Yokogawa Touch Screen GP20 User Manual
Page 345
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IM 04L51B01-01EN
Using Modbus Functions (Communicating with Modbus devices)
1
2
3
4
5
App
I/O Channel Data
Hold Register
Data Type
• Register
Channel 0001 example
Higher bytes
Lower bytes
Register 400002
Channel 0001 data
Register 400001
• There is no decimal place information.
1 When Modbus writing is performed on a channel of a DO module, a relay output occurs from the
corresponding channel of the DO module.
Write a 0 to turn the relay off.
Write a nonzero value to turn the relay on.
To enable relay output from a DO module through Modbus writing, the DO channel range type
must be set to
Manual. See page 1-42 in section 1.4.1, “Setting the Range”.
• 32-bit floating point
I/O Channel Data
Hold Register
Data Type
Lower bytes of the channel 0001 data
401001
32-bit floating point
Higher bytes of the channel 0001 data
401002
|
|
Lower bytes of the channel 0050 data
401099
Higher bytes of the channel 0050 data
401100
Lower bytes of the channel 0101 data
401101
Higher bytes of the channel 0101 data
401102
|
|
Lower bytes of the channel 0150 data
401199
Higher bytes of the channel 0150 data
401200
Lower bytes of the channel 0201 data
401201
Higher bytes of the channel 0201 data
401202
|
|
Lower bytes of the channel 0250 data
401299
Higher bytes of the channel 0250 data
401300
Lower bytes of the channel 0301 data
401301
Higher bytes of the channel 0301 data
401302
|
|
Lower bytes of the channel 0350 data
401399
Higher bytes of the channel 0350 data
401400
Lower bytes of the channel 0401 data
401401
Higher bytes of the channel 0401 data
401402
|
|
Lower bytes of the channel 0450 data
401499
Higher bytes of the channel 0450 data
401500
Lower bytes of the channel 0501 data
401501
Higher bytes of the channel 0501 data
401502
|
|
Lower bytes of the channel 0550 data
401599
Higher bytes of the channel 0550 data
401600
Lower bytes of the channel 0601 data
401601
Higher bytes of the channel 0601 data
401602
|
|
Lower bytes of the channel 0650 data
401699
Higher bytes of the channel 0650 data
401700
Lower bytes of the channel 0701 data
401701
Higher bytes of the channel 0701 data
401702
|
|
Lower bytes of the channel 0750 data
401799
Higher bytes of the channel 0750 data
401800
Lower bytes of the channel 0801 data
401801
Higher bytes of the channel 0801 data
401802
|
|
Lower bytes of the channel 0850 data
401899
Higher bytes of the channel 0850 data
401900
Continued on next page
4.5 Modbus Function and Register Assignments