RadiSys EPC-2102 P5000HX2 Series, Service Manual

Page: 38 / 44

EPC-2102 Single-Board Computer
28 Service Manual
Pin Signals
The tables below list the pin signals for the serial and parallel ports. The following illustration
(
Figure 10 ) indicates the pin positions for each
Table 10. Serial and Parallel Port Pin Signals
Serial Port 1 Serial Port 2
RS-232 RS-232 RS-422
Pin Description 10-Pin Description Pin Description
DE9P 1 Data Carrier Detect (In) DE9P 10-Pin
1 Data Carrier Detect (In) 2 Data Set Ready (In) 1 1 /Z Output (TX-)
2 Receive Data (In) 3 Receive Data (In) 6 2 /B Receive (RX-)
3 Transmit Data (Out) 4 Request to Send (Out) 2 3 Y Output (TX+)
4 Data Terminal Ready (Out) 5 Transmit Data (Out) 8 6 A Receive (RX+)
5 Ground 6 Clear to Send (In)
6 Data Set Ready (In) 7 Data Terminal Ready (Out)
7 Request to Send (Out) 8 Ring Indicator (In)
8 Clear to Send (In) 9 Ground
9 Ring Indicator (In) 10 N/C
To connect two RS-422 devices, use a shielded twisted-pair (STP) cable no longer
than 4,000 feet, configured as listed below:
Machine A
Pin Signal
Machine B
Pin Signal
/Z Output (TX-) /B Receive (RX-)
Y Output (TX+) A Receive (RX+)
/B Receive (RX-) /Z Output (TX-)
A Receive (RX+) Y Output (TX+)
Parallel Port (DB25S)
Pin Description Pin Description
1 - Strobe 10 - Acknowledge
2 Data Bit 0 11 + Busy
3 Data Bit 1 12 + Paper Feed
4 Data Bit 2 13 + Select
5 Data Bit 3 14 - Auto Feed
6 Data Bit 4 15 - Error
7 Data Bit 5 16 - Initialize Printer
8 Data Bit 6 17 - Select Input
9 Data Bit 7 18-25 Ground
←→
←→
←→
←→
StockCheck.com