Manual

4-15
IM 04L51B01-01EN
Using Modbus Functions (Communicating with Modbus devices)
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App
4.5.4 Input Registers (Shared with the Modbus server/slave function)
Common Items
• The client device can only read the input registers.
• Decimal place and unit are not included. Specify them on the client device.
• Due to the different number of channels between modules, unavailable channel numbers
will exist. This will not cause a register read error, so you can read the data continuously.
• The register values for unavailable channel numbers are set to 0, and the status
information is set to SKIP.
• Channel range by model
Channel type GX20/GP20 GX10/GP10
I/O channel 0001 to 0950 0001 to 0250
Math channel A001 to A100 A001 to A050
I/O Channel Data
• 32-bit Signed Integer
I/O Channel Data Input Register Data Type
Lower bytes of the channel 0001 data 300001 32-bit signed integer
Higher bytes of the channel 0001 data 300002
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Lower bytes of the channel 0050 data 300099
Higher bytes of the channel 0050 data 300100
Lower bytes of the channel 0101 data 300101
Higher bytes of the channel 0101 data 300102
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Lower bytes of the channel 0150 data 300199
Higher bytes of the channel 0150 data 300200
Lower bytes of the channel 0201 data 300201
Higher bytes of the channel 0201 data 300202
| |
Lower bytes of the channel 0250 data 300299
Higher bytes of the channel 0250 data 300300
Lower bytes of the channel 0301 data 300301
Higher bytes of the channel 0301 data 300302
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Lower bytes of the channel 0350 data 300399
Higher bytes of the channel 0350 data 300400
Lower bytes of the channel 0401 data 300401
Higher bytes of the channel 0401 data 300402
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Lower bytes of the channel 0450 data 300499
Higher bytes of the channel 0450 data 300500
Lower bytes of the channel 0501 data 300501
Higher bytes of the channel 0501 data 300502
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Lower bytes of the channel 0550 data 300599
Higher bytes of the channel 0550 data 300600
Lower bytes of the channel 0601 data 300601
Higher bytes of the channel 0601 data 300602
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Lower bytes of the channel 0650 data 300699
Higher bytes of the channel 0650 data 300700
Lower bytes of the channel 0701 data 300701
Higher bytes of the channel 0701 data 300702
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Lower bytes of the channel 0750 data 300799
Higher bytes of the channel 0750 data 300800
Lower bytes of the channel 0801 data 300801
Higher bytes of the channel 0801 data 300802
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Lower bytes of the channel 0850 data 300899
Higher bytes of the channel 0850 data 300900
Continued on next page
4.5 Modbus Function and Register Assignments