Pertech A470e Flow Control, RS232 Serial Interface, Serial Interface Pinout

A470e Users Guide
Pertech® 2006 18
Printer Computer
DB-9M DB-9M
Pin Pin
1 N/C 1 N/C
2.RXD ← 3
3 TXD → 2
4 DTR → 6
5 SIG. GND. ← 5
6 DSR ← 4
(TTL FORM IN) →
7 RTS → 8
8 CTS ← 7
(TTL LOW PAPER) →
9. N/C N/C
The RS-232 interface uses either XON/XOFF(Software) or DTR/DSR(Hardware) protocol. This
is set in the Conguration Mode under the serial interface selections for Flow Control for XON/
XOFF, a particular character is sent back and forth between the host computer and the printer
to regulate the communication. For DTR/DSR, changes in the DTR/DSR signal coordinate the
information ow.
12345
6789
The A470e printer serial interface has a DB9 Pin Male connector. The cable must be Null Mo-
dem Serial for standard PC communications compatibility. The Baud Rate and Parity and Flow
Control are selectable through Command Codes or via the Conguration Mode. The settings
for the port on the PC must be congured the same as the printer or communication will fail.
Flow Control
Serial Interface Pinout DB9F to DB9F Serial
Interface Cable
Pertech Part Number
106356010
RS232 Serial Interface