MM64003a_e.doc / Feb-09
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•
All functions may be set to positive response (switch ON upon switching event) or
negative response (switch OFF upon switching event)
•
Catch function: all functions may be set to lock in the active position (e.g. remain
continuously ON or continuously OFF) until to acknowledgement by a remote reset
signal
Output 1 to Output 4 are fast-switching, short-circuit-proof transistor outputs with a switching
capability of 5 – 30 volts / 350 mA each. The switching voltage of the outputs must be applied
remotely to the Com+ input (terminal 29)
The relays Rel1 to Rel4 provide dry changeover contacts at a switching capability of maximum
250 V/ 1 A/ 250 VA (AC) or maximum 100 V/ 1A/ 100 W (DC)
2.7.
Serial Interface
The serial RS232 interface can be used for the following purposes:
•
Set-up of the unit by PC by means of the OS32 PC software
•
Change of parameters during operation
•
Readout of actual speeds or positions or other counter values by PLC or PC
•
Running of functional checks of the monitor, under remote control of a superior system
The figure below shows how to connect the MM640 monitor to a PC or a PLC
2
3
5
RxD
RxD
TxD
TxD
GND
screen
PC
MM 640
14
(Sub-D-9)
30
31
PLC
MM 640
16
15
RS 485
A
B
A
B
Both serial interfaces can be connected at the same time.
However only the one or the other must communicate at a time.
It is not possible to communicate simultaneously with both interfaces
Summary of Contents for MM 640
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