HomeData Cable Specifications

DATA CABLE SPECIFICATIONS

Serial Interface Specifications

The XON/XOFF Protocol

The RS-232 serial interface communicates using hardware and XON/XOFF flow control. Flow control helps to ensure that the computer does not send information to the printer faster than it can print.

The XON/XOFF protocol is a popular data communications protocol. When the printer’s buffer is approximately 50 percent full, it sends the ASCII code XOFF (13 Hex) to the computer to tell it to stop sending data. When there is again room (that is, space for approximately 30 percent more characters in the buffer), the printer sends the ASCII code XON (11 Hex) to the computer to tell it to resume sending data. (XON is also known as DC1; XOFF is synonymous with DC3.) If the computer does not stop sending data after it receives an XOFF, the data that overflows the buffer will be lost and the printer will halt.

The printer will send an XON code when it goes on-line to get things started. It will send an XOFF code to stop the computer from sending information if the input buffer is approximately 50 percent full.

NULL-MODEM CABLES
DB-9 3TO DB-9
1 and 6 4
2 3
3 2
4 1 and 6
5 5
7 8
8 7

Where is Pin 1?

Connector: DB-9

Female

 

Default Communication Settings

The RS-232C interface default configuration settings are:
Baud Rate: 9600 BPS
Data Bits: 8 Bits
Parity: None
Stop Bits: 1
Handshaking: XON/XOF
Receive Error: Prints
Input Buffer 8,192 bytes

 

These communications settings may be altered only through the use of the CONFIG program, special printer
configuration software available from TransAct. Contact TransAct Technical Support for further information
on this utility.

 

USB Communications Interface PCB

The USB Communications PCB contains two connectors.

  • Power – 4 position Molex Minifit Jr®., part number 39-30-1040, which mates with Molex part number 39-01-2040 or equivalent.
  • USB Communications – Type B USB connector

USB Communication PCB Pin-Outs
PIN# FUNCTION I/O
USB CONNECTOR
1 VBUS
2 D- I/O
3 D+ I/O
4 GRD
POWER CONNECTOR
1 +24VDC
2 GRD
3 GRD
4 FGND

 

NETPLEX Communications Interface PCB

The NETPLEX Communications interface connector is a 10 position Molex Minifit Jr®., part number 39-30-1100, which mates with Molex part number 39-01-2100 or equivalent.

Netplex Communication PCB Pin-Outs
PIN# FUNCTION I/O
1 MRESET (Active low) I
2 RXD I
3 +12 VDC I
4 TXD O
5 SGND
6 +24VDC
7 GND
8 +24VDC
9 Bezel Lamp – Switched +24VDC O
10 GND

 

Universal USB/NETPLEX Communications Interface PCB

The Universal USB/NETPLEX interface supports both USB and NETPLEX communications.
This interface contains three connectors:

  • Power – 4 position Molex Minifit Jr®., part number 39-30-1040, which mates with Molex part number 39-01-2040 or equivalent.
  • NETPLEX communications- 6 position Molex Minifit Jr®., part number 39-30-1060, which mates with Molex part number 39-01-2060 or equivalent.
  • USB Communications – Type B USB connector.

Universal USB/Netplex Communication PCB Pin-Outs
PIN# FUNCTION I/O
USB CONNECTOR
1 VBUS
2 D- I/O
3 D+ I/O
4 GND
POWER CONNECTOR
1 +24VDC
2 GND
3 GND
4 FGND
NETPLEX CONNECTOR
9 MRESET (Active low) I
10 RXD I
+12VDC I
TXD O
SGND
Bezel Lamp – Switched +24VDC O

Table 4. Universal USB/Netplex Communication PCB Pin-Outs

 

Dual Port NETPLEX Communications Interface PCB

The Dual Port NETPLEX Communications interface contains three connectors:

  • NETPLEX Communications. – 10 position Molex Minifit Jr®., part number 39-30-1100 for NETPLEX connections which mates with Mole part number 39-01-2100 or equivalent.
  • I2C Communications – 2 modular RJH connections The connectors are electrically connected to allow daisy chaining of multiple devices.

Netplex Communication PCB Pin-Outs
PIN# FUNCTION I/O
NETPLEX CONNECTOR
1 MRESET (Active low) I
2 Not Connected N/C
3 +12 VDC I
4 Not Connected N/C
5 GND
6 +24VDC
7 GND
8 +24VDC
9 Bezel Lamp – Switched +24VDC O
10 FGND
I2C PORT
1 RESET I
2 SCL I
3 SDA I/O
4 GND

Table 5. Dual Port Netplex Communication PCB Pin-Out

 

Dual Port RS232 Communications Interface PCB

The Dual Port RS232 Communications interface contains three connectors:

  • RS232 Communications14 position Molex Minifit Jr®., part number 39-30-1140 which mates with Molex part number 39-01-2040 or equivalent.
  • I2C Communications -2 two modular RJH connections for a secondary I2C port. The two modular connectors are electrically connected to allow daisy chaining of multiple devices.

Netplex Communication PCB Pin-Outs
PIN# FUNCTION I/O
RS232 CONNECTOR
1 MRESET (Active low) I
2 Not Connected N/C
3 +12 VDC I
4 Not Connected N/C
5 GND
6 +24VDC
7 GND
8 +24VDC
9 Bezel Lamp – Switched +24VDC O
10 FGND
11 RS232 RXD I
12 RS232 TXD O
13 DTR O
14 RTS O
I2C PORT
1 RESET I
2 SCL I
3 SDA I/O
4 GND

Table 6. Dual Port RS232 Communication PCB Pin-Outs

 

Bezel Lamp Connector

The bezel connector is a Molex Minifit Jr®, part number 39-01-4032 and will mate with a Molex part number 39-01-4030 or equivalent.

Figure 11. Bezel Lamp Connector Location and Connector Information

Bezel Lamp Connector Pin-Outs
PIN# FUNCTION
1 Modulated +24VDC
2 Not Connected
3 GND

Table 7. Bezel Power Connector Pin-Outs