Siemens simatic ET 200MP Manual - Halaman 12

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Halaman Cetak
Siemens simatic ET 200MP Manual
Product overview

2.3 Functions

2.3
Functions
Introduction
The communication module allows you to exchange data between your own and other
programmable controllers or computers by means of a point-to-point connection, and to
connect various devices from a variety of manufacturers.
Functionality of the CM PtP RS422/485 BA
The CM PtP RS422/485 BA communication module offers the following functionality:
● RS422/485 interface
● Data transmission rate: 300 to 19200 bps
● Maximum frame length: 1 kbyte
● Transmission protocols: Freeport and 3964(R)
Note
The USS protocol can be implemented with instructions included in STEP 7 (TIA Portal).
Hardware components of a point-to-point connection
You require certain hardware components for a point-to-point connection with the
CM PtP RS422/485 BA.
Components
Central processor unit (CPU)
Accessories: Memory card
CM PtP RS422/485 BA communication module
Connecting cable
U connector
Optional: Power supply module (PS)
12
Function
... executes the user program.
... communicates with a communication partner (point-to-point) by
means of the interface.
... connects the CM PtP RS422/485 BA communication module with
the communication partner.
... provides the mechanical and electrical connection between the
modules.
... converts the line voltage (120/230 VAC or 24 VDC) into the
operating voltage of 15 VDC required for supply of the S7-1500.
CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
Manual, 01/2013, A5E03777484-01