Data 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
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