Atlas Copco PowerMACS 4000, User Manual

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Peripheral Devices
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The AnyBus-S Modbus TCP communication module acts as a server and supports the following Modbus
TCP commands:
Function
code Sub
code Function Name Register
type Affects Area
See note 1 Addressing
method
1 - Read coils 0 IN/OUT Bit
2 - Read Input discrete 1 IN/OUT Bit
3 - Read multiple registers 4 IN/OUT Word
4 - Read input registers 3 IN/OUT Word
5 - Write coil 0 OUT Bit
6 - Write single register 4 OUT Word
15 - Write multiple coils 0 OUT Bit
16 - Write multiple registers 4 OUT Word
23 - Read/Write multiple
registers 4 IN/OUT Word
43 14 Read Device Identification - - -
Note 1: IN/OUT here refer to the client side. That is, IN is input to the client (output from PowerMACS)
and OUT is output from the client (input to the PowerMACS).
The Modbus TCP IN and OUT areas can be configured to a maximum size of 8192 bytes. The input and
output areas of the PowerMACS fieldbus device are available from the Modbus TCP network side as
registers. Each register represents a word of data on the fieldbus device.
The Fast bytes IN area (output from PowerMACS) using 04: Input Register:
Word addr Bit address
0x000 0x0000 0x0001 0x0002 0x0003 0x0004
…
0x000E 0x000F
0x001 0x0010 0x0011 0x0012 0x0013 0x0014
…
0x001E 0x001F
... ... ... ... ... ...
…
... ...
0x1FFF 0x1FFF0 0x1FFF1 0x1FFF2 0x1FFF3 0x1FFF4
…
0x1FFFE 0x1FFFF
The Fast bytes OUT area (input to PowerMACS) using 03: Holding Register:
Word addr Bit address
0x000 0x0000 0x0001 0x0002 0x0003 0x0004
…
0x000E 0x000F
0x001 0x0010 0x0011 0x0012 0x0013 0x0014
…
0x001E 0x001F
... ... ... ... ... ...
…
... ...
0x1FFF 0x1FFF0 0x1FFF1 0x1FFF2 0x1FFF3 0x1FFF4
…
0x1FFFE 0x1FFFF
The Acyclic IN area (output from PowerMACS) using 03: Holding Register: