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M550 PLC
The M550 is a fourth-generation Micro-Comm controller built with the processor daughterboard
from the S4500 (32bit microprocessor). The M550E is a version of the M550 with an Ethernet
port in place of the COM2 serial port.
The M550 is physically much smaller than the S4500, having the reduced I/O count listed
below:
I/O capabilities:
(4) Open-collector outputs (COM1 pins used for radio switching)
(2) On-board 12bit analog inputs
Temperature (0.25 to 4.75v = -50C to +150C = -58F to +302F),
System Voltage (0 to 5v = 0 to 25.5 volts)
(3) Communication ports
- COM1 25pin port for radio cable
- COM2 9pin port used for the display module and programming
(Note: The M550E has an Ethernet 10baseT port for COM2)
- COM3 can be congured as an RS-485 port for I/O modules or as an RS-232 port with PTT supprt
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