COMPONENT DESCRIPTION AND REPLACEMENT
MULTIBUS MODULES
WBPEEUI220760A0
6 - 9
Two ribbon cables connect the loop module to the communica-
tion processor module and to the communication loop module
terminations. Dipswitches SW1 and SW2 select the node
address and ring number of the OIS console.
IIMCP01 Multibus Communication Processor Module
The multibus communication processor module (used for Plant
Loop systems, 10,000 tags) contains a library of commands
which send and retrieve data from other process control units
and operator consoles. The OIS console sends commands to
the multibus communication processor module requesting it to
send or retrieve required data. Figure
shows dipswitch
locations and settings. Refer to Table
for the module
dipswitch settings.
Also located on the module board are jumpers J5, J6, and J7.
Jumper J5 should not be changed from the factory setting. For
correct operation, jumpers J6 and J7 must be set as shown in
Figure
when using the IIMCP01 and the CPU (DEC Alpha-
Station 255 model 233 Open VMS).
Table 6-7. IIMLM01 Dipswitch Settings
Switch
Position
Description
Switch Setting
SW 1
1-8
Loop node number
1-0FA hex
(pole 8 is LSB)
SW 2
1-8
Ring number
1-0FA hex
(pole 8 is LSB)
SW 3
1
Device compatibility
0 = MCP
1 = BCM
2
ROM checksumming
0 = No checksumming
1 = Checksumming enabled
3
Run mode
0 = Normal operation
1 = Test mode
4
Busy test
0 = Normal operation
1 = Busy NAK all loop messages
if run mode
switch set to 1
5
Broken loop indication
0 = Disable flashing of LEDs
1 = Flashing LEDs
6
Diagnostic enable
0 = Normal operation
1 = Diagnostics enabled
-
normal operation
disabled
7-8
Loop type
00 = 10-MHz INFI-NET system
01 = 2-MHz INFI-NET system
10 = Undefined
11 = Plant Loop system
SW 4
1-3
I/O expander bus address select
0-7
4-8
LED display select
0-1F hex
NOTE: 0 = CLOSED or ON, 1 = OPEN or OFF. Bold areas indicate default settings.
