Communication
ABB Control - AC 31
Page 7-13
1SBC 260400 R1001-b
06.99
2. Point to point communication with the incorporated ASCII interface
2.1. Protocol description
ASCII communication is a protocol which enables exchanging text coded in ASCII (American
Standard Code of Information Interchange) between two devices for example.
It may be used by the 40 and 50 series central units to communicate with a printer or a
terminal fitted with an ASCII interface (Figure 7-7).
2.2. Configuration of the communication
2.2.1. Using the black 07 SK 51 or 07 SK 53 cable
The serial interface of the 40 and 50 series central units is configured by default in
programming and test mode with the grey 07 SK 51 or 07 SK 53 cable and in MODBUS
mode with the black 07 SK 51 or 07 SK5 3 cable.
Changing the programming mode to ASCII mode requires a serial interface configuration
through the software:
Click on the
"Launch PLC configuration tool"
icon in the AC31GRAF control window
and select
"ASCII"
or
"Standard"
from the list of the
"Communication mode
"
line (see
Figure 7-8).
ASCII mode is available when the central unit is running. Programming mode is, once again,
available for test or modifications once the central unit program is stopped or when the grey
07 SK 50 or 07 SK 52 cable is used.
Comments:
When the central unit program is running:
- Choosing
"ASCII"
validates the communication whichever cable is being used.
- Choosing
"Standard"
validates the ASCII mode with the black 07 SK 51 or 07 SK 53 cable
and the programming mode with the grey 07 SK 50 or 07 SK 52 cable.
2.2.2. Communication parameters
There isn’t a default configuration. It is therefore
necessary
to configure the communication
parameters (speed, stop bits, data bits, parity, end of frame) with the
SINIT
function
in the
user program.
Summary of Contents for AC 31
Page 1: ...Technical Manual Advant Controller 31 40 50 Series 1SBC 260400 R 1001 b ...
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Page 45: ...Technical specifications Page 3 2 ABB Control AC 31 1SBC 260400 R1001 b 06 99 ...
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Page 85: ...Installation Page 4 2 ABB Control AC 31 1SBC 260400 R1001 b 06 99 ...
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Page 130: ...Programming ABB Control AC 31 Page 5 21 1SBC 260400 R1001 b 06 99 ...
Page 182: ...Communication ABB Control AC 31 Page 7 11 1SBC 260400 R1001 b 06 99 ...
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Page 218: ...AC 31 technical documentation ABB Control AC 31 Index Page 1 1SBC 260400 R1001 b 06 99 Index ...