Chapter 1. Installation
1 3
THUMBWHEEL CONNECTIONS –
for entering BCD data
Connection to the Compumotor TM8 Module
Optional Sign Bit
Programmable Input #1
Programmable Input #2
Programmable Input #3
Programmable Input #4
Programmable Input #5
OEM-AT6400
60-pin Connector
Pin #18 (+5VDC)
Pin #20 (GND)
Programmable Output #1
Programmable Output #2
Programmable Output #3
+
1
2
3
4
5
6
7
8
+5 GND I5 I4 I3 I2 I1 O5 O4 O3 O2 O1
TM8 Thumbwheel Module
STATUS LED
PC-AT
After applying power, the LED will be off. After
downloading the operating system, the status LED will
turn green indicating the system is ready for operation.
If the LED does not turn green after downloading the
operating system, an error has occurred. The
download program (
AT6400
) issues an error message
if it cannot find the card or if the download operation is
not successful (refer also to the Downloading Error
Table provided in Chapter 2).
Board Monitor Alarm (BMA): Detects un-recoverable
faults in hardware and software. When the BMA
detects a fault, the LED turns off. The BMA can be
reset by cycling power to the PC-AT, or by re-
downloading the operating system.
OEM-AT6400
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