Pilz PNOZ mm0p 24VDC - Manual (Page 95)

Modbus/TCP
Operating Manual PNOZmulti communication interfaces
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Data areas
Overview
A configurable control system PNOZmulti supports the following Modbus/TCP data areas:
Data area Modbus syntax Example
Coils (Bit)
0x00000 … 0x65535
[read/write]
0x[xxxxx] 0x00031
(virtual input i31)
Discrete Inputs (Bit)
1x00000 … 1x65535
[read only]
1x[xxxxx] 1x08193
(virtual output o1)
Input Register (Word/16 Bits)
3x00000 … 3x65535
[read only]
3x[xxxxx] 3x00002
(virtual inputs 32 ... 47)
Holding Register (Wort/16
Bits)
4x00000 … 4x65535
[read/write]
4x[xxxxx] 4x00805
(project name, 1st character)
Information
Addressing for PNOZmulti systems starts at “0”. On devices from other
manufacturers, addressing can start at “1”.
Please refer to the operating manual provided by the relevant manufacturer.
Function codes
The following function codes (FC) are available for communication with the PNOZmulti via
Modbus/TCP:
Function
code Function
FC 01 Read Coils The connection Client reads bit data from the con-
nection Server,
data length ≥ 1 Bit, content: input/output data
(data received from 0x)
FC 02 Read Discrete Input The connection Client reads bit data from the con-
nection Server,
data length ≥ 1 Bit, content: input/output data
(data received from 1x)
FC 03 Read Holding Reg-
ister
The Client in a connection reads word data from the
Server in the connection,
data length ≥ 1 Word, content: diagnostic word
(data received from 4x)
6.4
6.4.1
6.4.2