Siemens SIMATIC S7 CP340 - ASCII Protocol Communication of CP441; CP441 Interface Sub-Module; Equipment Connection

4 ASCII protocol communication
CP340/CP341/CP440/CP441 Communication and Programming
Entry-ID: 88867653, V1.0, 02/2014
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 Siemens AG 2014 All rights reserved
4.3.4 Equipment connection
CP440 module only provides one 15-pin RS422/485 serial port. Select RS422 or
RS485 interface according to the wiring mode. Only one interface is valid. RS422
is 4-wire and in full-duplex mode while RS485 is 2-wire and in half-duplex mode.
The detailed cable connecting method may be seen in CP440 Manual - Appendix
B: Connecting cables.
4.4 ASCII protocol communication of CP441
CP441 communication module may select sub-module in different interface type
according to the actual application in order to realize communication with one or
more communication partners. CP441-1 (1 selectable sub-module interface),
CP441-2 (2 selectable sub-module interfaces). The sub-module interfaces are in 3
types:
Order number
Interface type
comments
6ES7963-1AA00-0AA0
RS232C
9-pin D type connection
6ES7963-2AA00-0AA0
20mA TTY
9-pin D type connection
6ES7963-3AA00-0AA0
RS422/485
15-pin D type connection
Table 9: CP441 interface sub-module
The configuration process is introduced below with CP441-2 as an example.
4.4.1 Hardware catalog
RACK-400
6ES7 400-1JA01-0AA0
PS407
6ES7 407-0KA02-0AA0
CPU
6ES7 414-3XJ04-0AB0
CP441-2
6ES7 441-2AA03-0AE0
(Interface1：RS232C, interface used in this example)
(Interface2：RS422/485)