Pilz PNOZ mm0p 24VDC - Manual (Page 94)

Modbus/TCP
Operating Manual PNOZmulti communication interfaces
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Modbus/TCP with PNOZmulti
All base units from the configurable control system PNOZmulti that have an Ethernet inter-
face (PNOZ m1p ETH from V2.1) support Modbus/TCP. The same applies for the base
units PNOZmulti Mini in conjunction with a communication module with Ethernet interface.
A PNOZmulti base unit can manage a max. of 8 Modbus/TCP connections. The PNOZmulti
is always the Server in a connection. The connection Clients may be various devices, e.g.
PC (PNOZmulti Configurator), control system, display unit. They can access the configur-
able control system PNOZmulti simultaneously.
The virtual I/Os plus all the information that is polled during fieldbus communication are
contained in data areas. The data is accessed directly. It's no longer necessary to switch
via table/segment.
The configurations required for Modbus/TCP are fully pre-configured in the PNOZmulti op-
erating system. All that's necessary in the PNOZmulti Configurator is to activate the virtual
inputs and outputs (see PNOZmulti Configurator's online help, under "Display and edit
module selection").
On a configurable control system PNOZmulti, port number "502" is fixed as the default for
data exchange via a Modbus/TCP connection. It is not displayed in the PNOZmulti Configu-
rator and cannot be modified.
6.3