USER MANUAL 1771-DCM User Manual

Troubleshooting Your 1771-DCM
Chapter 8
84
Function
• Provides
Direct Communication
Between Supervisory and Local
Processors
Serial Communication
• Discrete Data T ransfer: Up to
Seven W ords Plus One Status W ord
•
Block T ransfer: Up to 63 W ords Plus
One Status W
ord
Transmission
•
10,000 Cable Feet at 57.6K Baud
• 5,000 Cable Feet at 1 15.2K Baud
Response T ime
•
Less than 15 ms
Interconnect Cable
• 1770-CD (Belden 9463 or Equivalent)
Backplane Current
• 1.2A
Keying
• T
op Connector:
Between 2 and 4
Between 16 and 18
Environmental
•
Operational T emperature:
0
o
to 60
o
C (32
o
to 140
o
F)
•
Storage T emperature:
-40
o
to 85
o
C (-40
o
to 185
o
F)
•
Relative Humidity:
5% to 95% (Without Condensation)
Specifications