Karel MS128 Installation & Maintenance Guide
Edition 3.2
27
• N
OTES
:
Only one of the three CRL accessories - namely KY16 Mini Printer, CM128 CRL
Interface and/or PK128 PC-Console Interface or the serial printer - can be
connected to the system at a time. The selection among these devices is made
by programming.
II.3.B. SERIAL PRINTER INTERFACE
Using the serial communication port on CPU128 card, any serial printer can be
connected to the system to have the reports of the call records and activated
system features.
The signaling between the system and the printer is illustrated in the following
table:
CPU128 Card Printer
Connector No Signal 25-pin connector
Pin No
9-pin connector
Pin No
2 TXD 3 2
8 RXD 20 4
5 GND 7 5
The signal names above are given with respect to MS128 system and these pin
assignments are valid only for IBM compatible devices. If your device is not IBM
compatible, then you must provide the requested pin connections to match the
signaling parameters of the system.
The communication protocol for Printer - Exchange connection is illustrated in the
following table :
For Printer
Data Bits 8
Stop Bit 1
Parity Even
Baud Rate 2400
You may need to configure the printer for these parameters by selecting
appropriate settings on the printer.
• N
OTES
:
Only one of the three CRL accessories - namely KY16 Mini Printer, CM128 CRL
Interface and/or PK128 PC-Console Interface or the serial printer - can be
connected to the system at a time. The selection among these devices is made
by programming.
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