Pin Assignments
a. Pin Assignments (Main connector on underside of printer)
Position
Name
Description
1
MRESET
Hardware reset
2
RXD - I
Receive data (printer), Photo-coupler Isolation
3
VDD
Photo-coupler bias voltage. (DC+12 V or DC+13 V)
4
TXD – I
Transmit data (printer), Photo-coupler Isolation
5
IGND
Isolated Ground
6
DC+24 V
Printer Power Supply
7
GND
Ground
8
DC+24 V
Printer Power Supply
9
RCTR24
Modulated 24 V signal. For showing status via LED.
10
GND
Ground
11
RXD
Receive data (Printer), RS-232C
12
TXD
Transmit data (Printer), RS-232C
13
DTR
14
RTS
• Both photo-coupler isolation and RS-232C physical interfaces are available.
• Mating Connector: Molex, Mini-Fit Jr. ., Receptacle #39-01-2145
Interface Receptacle
7
