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7.1
Messages
7.1.1
Communications specifications
Item
Physical level
Wiring distance
Number of nodes
Transmission speed
Transmission mode
Bus topology
Character code
Character length
Stop bit
Frame length
Parity
Error checking
Specifications
EIA RS-485
1640 ft (500 m) max.
Total of 128
9600, 19200, 38400 bits/s
Half duplex
Master-Slave/Token Passing (MS/TP)
ASCII 7 bits (fixed)
8 bits (fixed)
1 bit (fixed)
Variable length
None (fixed)
CRC
7-1
7.1 Messages
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