Gasboy FuelOmat system 8 Popt Commverter - Manual (Page 32)

2.5.1. RS-485 Connector Pinout
The following pinout is required for the LAN to RS-485 application, for all devices that supports
RS-485 and RS-485 board.
[ Revision D and above ]
8 7 6 5 4 3 2 1
E G - + E G - +
Channel 2 Channel 1
2.5.2. RS-485 Module Jumpers
The jumpers in the RS-485 module can be set in two different configurations, as shown in
Figure 3-7. The configuration is determined by four consecutive jumpers on the board: J1, J2, J5
and J6.
Every pair of jumpers is allocated to a different channel:
J1 and J2 for Channel 1 / J5 and J6 for Channel 2.
The jumpers determine the transmission rate. Two transmission rates can be selected:
 9600 bps
 4800 bps
To determine the transmission rate, set the jumpers accordingly. Proceed as follows:
1. Set the baud rate jumpers in the RS-485 cards in accordance with the pumps that
shall be connected to each channel (refer to Table 2-1).
The jumpers are: J1 for Channel 1 and J5 for Channel 2 (see Figure 2-9).
Table 2-1 . RS-485 Module Jumpers Status (according to pumps)
8 port
Commverter Aplab Avery Gasboy MIDCO L&T NP NP Blend Tatsuno Wayne
Dart
Baud rate
Jumper Do not
remove Do not
remove Remove Remove Do not
remove Remove Remove Remove Do not
remove
The Echo jumpers are J9 and J10.
 If no jumpers exist echo is enabled.
 If jumpers exist echo is disabled (factory default)
8 Port CommVerter Operation and Installation Manual 28