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Series 9820 ASTRA Installation
Switch Settings
In order for the ASTRA to communicate to the TopKAT via RS-485, the switches on the
ASTRA CPU must be set as follows:
Switch
SW1-1
SW1-2
SW1-8
SW2-1 through SW2-4
Refer to Section 5 of one of the following for ASTRA switch settings, access, and location:
• 035391 Series 9820A ASTRA Electronic Commercial Pumps Installation/Operation
• MDE-4339 Series 9820Q ASTRA Electronic Commercial Pumps Installation/Operation
Port Communication Wiring
The following diagrams show the pin-to-pin layout of the possible wiring schemes for the
TopKAT ports. Each port may be wired for any of the wiring schemes provided the
installation requirements are met as outlined in
Figure 4-5: RS-232 - D Connector
Note: In the TopKAT, the green connector goes to P4 on the communication board for port 2
Page 26
Function
Baud Rate Switch
Mode Switch
RS-485 Pump Stop Detection
Address
Manual
Manual
and P6 for port 3. The K1 & K2 jumper for the port being used should be set to RS-232.
See
"Terminal Block ID" on page 26
MDE-4319A TopKAT Fuel Managment System Installation Manual · November 2005
ASTRA to TopKAT Cabling
Position/Setting
Open (9600 baud)
Open (on-line)
Closed (disabled)
Closed (address 1)
"Communication Requirements" on page
for the location of K1 & K2 jumpers.
17.
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