ICD Multi I/O Board Manual (Rev 5/20/1987) Standard Printer & MODEM Cables

 

Appendix B — Standard Printer & MODEM Cables Index

The following two tables are the standard connection specifications used by ICD for our standard printer and MODEM cables. These should work for the most common printers and MODEMs or they may need to be modified according to the special needs of your particular installation.

Printer Cable Connections
 
36 pin centronics (male)
            DB15P
                    1
2 		       1 - Data Strobe
2 - D0
  3
4 		       3 - D1
4 - D2
  5
6 		       5 - D3
6 - D4
   7
8 		       7 - D5
8 - D6
  16
32 		       11 - Gnd
12 - Fault
  11
9                    		            13 - Busy
15 - D7
 Frame — to the
shield wire
  No connection to shield

********************************************************************************************************

MODEM Cable Connections
 
DB25P
        DB9P
 
                     20
8 		                     1 - DTR
2 - CRX
  2
3 		    3 - XMT
4 - RCV
  7
6 		    5 - GND
6 - DSR
   4
5 		    7 - RTS
8 - CTS
 Frame — to the
shield wire
  No connection to shield

 

The following table is used with a Toshiba P321 printer with serial interface and is only shown as a guide. All handshaking lines are connected even though most applications would work with only XMT, RCV, and GND. The Toshiba printer is a DTE device and the MIO is also a DTE device. This requires the crossing of XMT and RCV. Be sure to check your printer manual for pin out as most printer connectors will vary. If your serial printer is a DCE device (not DTE) then XMT would connect to XMT and RCV to RCV.

DTE Serial Printer Cable Connections
 
      DB25P
        DB9P
     
       6 - DSR
4 - RTS 		      1 - DTR
2 - CRX
       3 - RCV
2 - XMT 		      3 - XMT
4 - RCV
       7 - GND
20 - DTR 		      5 - GND
6 - DSR
       5,8 - CTS,CD
14 - FAULT 		      7 - RTS
8 - CTS
Frame — to the
shield wire
  No connection to shield

 

Null MODEM Cable Connections

This will allow transfer of files between an MIO serial port or P:R: Connection and an IBM PC or Atari ST without using MODEMs. Tie pins 6 and 8 together at the DB25 end (PC or ST).

      DB25S
        DB9P
     
     8
20 		-
- 		 CRX
 DTR 		      1 - DTR
2 - CRX
     3
2 		-
- 		 RCV
 XMT 		      3 - XMT
4 - RCV
     7 -  GND
 NC 		      5 - GND
6 - DSR
          NC
 NC 		      7 - RTS
8 - CTS
Frame — to the
shield wire
  No connection to shield
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