Despatch Protocol Manager with Protocol Plus - Manual (Page 55)

Protocol Manager Software E-100
51
Controller Hardware and Cabling
Check the communications card
The card needs to be installed correctly (jumpers are on the bottom of the card
and should be facing the green terminals)
The jumpers need to be setup for RS232 or RS422, depending on the interface
being
used. See Modbus User’s Programming manual (E102) for proper
settings.
Check cabling between the controller and outside of oven
The R+ should be connected to terminal #1 on the back of the controller. Check
with an ohm meter that pin #2 on the 9 pin connector on the outside of the oven
is connected to this terminal.
The R- should be connected to terminal #2 on the back of the controller. Check
with an ohm meter that pin #7 on the 9 pin connector connected to this terminal.
The T+ should be connected to terminal #3 on the back of the controller. Check
with an ohm meter that pin #3 on the 9 pin connector connected to this terminal.
The T- should be connected to terminal #4 on the back of the controller. Check
with an ohm meter that pin #4 on the 9 pin connector connected to this terminal.
The SG should be connected to terminal #5 on the back of the controller. Check
with an ohm meter that pin #5 on the 9 pin connector connected to this terminal.
Check cabling between the computer and outside of oven
RS232 INTERFACE
The cable running from the Oven’s 9 Pin connector and the computer should be a null
modem cable (for a PC with a 9 pin connector, pin 2 at each end connects to pin 3 at
the other end, and the cable requires a female 9 pin plug at the PC end and a male 9
pin plug at the Oven end).