INSTALLATION
INNIS01 NETWORK INTERFACE SLAVE MODULE CONFIGURATION
3 - 4
WBPEEUI250016A1
®
Dipswitch SW3 pole one determines network processing mod-
ule compatibility. Set pole one to zero for a process control unit
interface. Pole two enables or disables ROM checksumming.
Elsag Bailey recommends that the NIS module be installed
with checksumming enabled to take full advantage of the
on-board diagnostics. Pole three enables internal testing which
must be disabled for normal operation. Pole four, in conjunc-
tion with pole three, makes the node appear to be busy to other
nodes. This condition is used by Elsag Bailey personnel only.
Pole five enables the loop idle condition display for the front
panel LEDs. If loop one is idle, the group A LEDs will flash on
and off about twice per second. If loop two is idle, the group B
LEDs will flash. The loop idle display is intended to serve as a
warning that a loop integrity problem exists. Pole six enables
diagnostic tests that preclude normal NIS module operation.
Poles seven and eight determine loop speed and loop mode.
NOTE: Testing modes involving poles three, four and six interfere
with normal node operation.
DIPSWITCH SW4 - I/O EXPANDER BUS ADDRESS AND
COUNTERS
The NIS module can have an I/O expander bus address from
zero to seven. Poles one through three of dipswitch SW4 set the
I/O expander bus address of the NIS module. Refer to Table
2
1
ROM checksumming enabled.
0
ROM checksumming disabled.
3
1
Test mode: no time-out for handshake failure.
0
Normal operating mode.
4
3
1
All loop messages return a busy negative acknowledgment.
0
Normal operating mode.
5
3
1
Group A LEDs will toggle on and off if loop 1 is idle or
shorted. Group B LEDs will toggle on and off if loop 2 is idle
or shorted. Normal display otherwise.
0
LED display as defined by dispwitch SW4.
6
3
1
Diagnostic mode.
0
Normal operating mode.
7/8
0/0
10-Mbaud INFI-NET mode.
0/1
2-Mbaud INFI-NET mode.
1/0
Unused.
1/1
Unused.
NOTE:
1. 1 = OPEN or OFF, 0 = CLOSED or ON.
2. Shaded areas designate normal operating positions.
3. Applies to Revision B or later ROMs. For Revision A ROMs, poles 4 through 6 must be set to 0.
Table 3-3. INNIS01 Module Dipswitch SW3 Settings
(continued)
Pole
Setting
1,2
Function
2
User
Setting
