Pilz PNOZ m B0 - Manual (Page 26)

Communication modules
Operating Manual PNOZmulti 2 Communication Interfaces
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5 Communication modules
5.1 Overview
The communication module on the configurable control system PNOZmulti 2 is used to
} Download and upload the project,
} Read the diagnostic words,
} Read the error stack.
The following combinations are possible:
} Serial interface RS232
– Base unit PNOZ m B0 + PNOZ m ES RS232
} Ethernet interfaces
– Base unit PNOZ m B0 + PNOZ m ES ETH
5.2 PNOZ m ES RS232
The connection to the RS 232 interface of the communication partner and the communica­
tion module PNOZ m ES RS232 is established via a null modem cable.
Transmission rate:
19.2 kBit with
} 8 bits of data
} 1 start bit
} 2 stop bits
} 1 parity bit
} Even parity
5.3 PNOZ m ES ETH
5.3.1 Introduction
This chapter describes the special features of communication with the expansion module
PNOZ m ES ETH via Ethernet and Modbus/TCP. Access to data from the PNOZmulti 2 via
tables and segments is described in Chapter Basics [ 13] .
5.3.2 Overview
The expansion module PNOZ m ES ETH provides an interface to Ethernet. Via this inter­
face, the configurable control system PNOZmulti 2 can be connected via Ethernet to control
systems that support Modbus/TCP. Modbus/TCP is designed for fast data exchange at field
level. The expansion module PNOZ m ES ETH is a passive Modbus/TCP subscriber
(Server). The basic functions of communication with Ethernet or Modbus/TCP conform to
IEEE 802.3. The central controller (Client) reads output information from the Servers and
writes input information to the Servers as part of each cycle. In addition to the cyclical pay­
load transmission, the PNOZ m ES ETH also has diagnostic functions.
The connections are established via two RJ45 sockets.