3.4.1
Cable Lengths
Maximum cable lengths from the CPU to the last device attached to the cable are:
Port 1 (RS-232)
:
Baud Rate
Maximum Cable Length
19.2 K and below
15 meters (50 ft.)
38.4K
7.5 meters (25 ft.)
57.6K
5 meters (16 ft.)
115.2K
2.5 meters (8 ft.)
Port 2 (RS-485)
: 1200 meters (4000 ft.)
3.4.2
Serial Port Baud Rates
Port 1
Port 2
RTU protocol
1200, 2400, 4800, 9600,
19.2K, 38.4K
†
, 57.6K
†
1200, 2400, 4800, 9600,
19.2K, 38.4K
†
, 57.6K
†
Serial I/O protocol
1200, 2400, 4800, 9600,
19.2K, 38.4K
†
, 57.6K
†
1200, 2400, 4800, 9600,
19.2K, 38.4K
†
, 57.6K
†
SNP protocol
4800, 9600, 19.2K,
38.4K
†
4800, 9600, 19.2K,
38.4K
†
Local Station Manager (this is
independent of serial protocol
baud rate)
1200, 2400, 4800, 9600,
19.2K, 38.4K, 57.6K,
115.2K
NA
Firmware Upgrade via
WinLoader
2400, 4800, 9600, 19.2K,
38.4K, 57.6K, 115.2K
NA
†
Only on one port at a time.
Some versions of VersaPro software allow configuration of RTU and Serial I/O at 115.2K
baud. However, this baud rate is not supported by the CPU. If a configuration using this
baud rate is stored to the PLC:
1.
For RTU, an
Unsupported Feature in Configuration
fault is logged and the PLC
transitions to
Stop Faulted
mode.
2.
For Serial I/O, the same fault is logged when the transition to
Run
mode occurs. The
PLC will immediately transition to
Stop Faulted
mode.
44
GFK-1503E
VersaMax PLC User Manual
For public disclosure
Summary of Contents for VersaMax PLC
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