Accessing The I/O Area - Wieland ricos FLEX BC MODBUS User Manual

Sample
6.5.3

Accessing the I/O area

Normally the access with Modbus happens by means of the ranges 0x, 1x, 3x and 4x.
0x and 1x gives you access to digital bit areas and 3x and 4x to analog word areas.
For the ricos FLEX BC MODBUS is not differentiating digital and analog data, the following assign-
ment is valid:
•
•
•
•
Wieland Electric GmbH | BA001269 | 09/2021 (Rev. A)
0x – Bit area for master output
Access via function code 01h, 05h, 0Fh
1x – Bit area for master input
Access via function code 02h
3x – Word area for master input
Access via function code 04h, 17h
4x – Word area for master output
Access via function code 03h, 06h, 10h, 16h, 17h
Deployment
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