SSI America BINARY SOLVENT DELIVERY MODULE 90-2581 REV B Manuel D’Utilisation

 

 A-1 

 
An RS-232C modular jack is provided on the back panel.  A 

computer, with appropriate software, can be used as a remote 
controlling device for pump operation via this connection. 

The REMOTE INPUT serial communications port is configured 

for 9600 baud, 8 data bits, 1 stop bit, and no parity.  The connector is a 
standard RJ-11 modular telephone type jack.  When looking at the 
connector on the rear panel of the pump, pin 1 is at the top and pin 6 is 
at the bottom.  The pin-out is: 

 

 

Pin 

Function

 1, 

6 

Ground 

 

2 

DSR (Handshaking input to pump) 

 

3 

RXD (Serial data input to pump) 

 

4 

TXD (Serial data output from pump) 

 

5 

DTR (Handshaking output from pump) 

 
Special wiring considerations:  Use the following chart for 

interfacing the pump's serial communications port to either a 25-pin or 
a 9-pin COM port on an IBM-PC type computer. 

 

 

Pump (RJ11) 

Signal 

 

IBM (DB25)

a

 

IBM (DB9)

b

 

 1, 

6 

Ground 

 

7 

5 

 2 

DSR  

20 

4 

 3 

RXD 

 

 

2 

3 

 4 

TXD 

 

3 

2 

 5 

DTR  

6 

6 

 

 

a

 Jumper pins 4, 5, and 8 on DB25. 

 

b

 Jumper pins 1, 7, and 8 on DB9. 

 

 Modular 

Cable 

12-0677 

 

Adapter RJ-11 to DB9 

12-0672 

 

Adapter RJ-11 to DB-25 

12-0671 

 

The pump uses hardware handshaking.  The pump will not 

transmit on the TXD output if the DSR input is at a low logic level.  
And, the pump will not receive on the RXD input when the DTR