M
M
F
F
W
W
-
-
Z
Z
D
D
-
-
B
B
A
A
-
-
U
U
K
K
-
-
0
0
0
0
6
6
P
P
a
a
g
g
e
e
7
7
o
o
f
f
2
2
4
4
A system from the MFW product family
Pulse input
Inputs E1...E4 can be configured for safe transfer of short pulses. Pulses or counter values are summed
up in the input module until the next station query and transferred as the counter states. Please make
sure that the assigned outputs are also configured as pulse outputs.
The counter values are compared between the MFW master and the substations in order to
monitor the values and to protect against incorrect pulse outputs, for instance when a
communication partner restarts. For this reason, the difference between a pair of sequentially
transmitted counter values must not be > 255.
Hour meter
The inputs E1 and E2 of the “EM-G8DEX-” digital expansion modules can be used as an hour meter. To
do so the inputs have to be configured simultaneously as hour meter and counter value processing
ones. Hour meters are treated the same as all other counter values in MFW. The significance of the
hour meter can be configured ( Operating instructions of the expansion modules ).
The hour meters can only be configured on the “EM-G8DEX-...” expansion module starting from
Software version 01404001.021.000 and not on the basic module.
3.3.2 Relay outputs
The “-ZDM12-G8DAR-DIA-0-BX-0” basic modules have 8 relay outputs. It is possible to change the
outputs A1 ... A4 between “static binary output” or “pulse output” using the DIP switch. The outputs A5
... A8 are used as static binary outputs.
Alternatively the “UF-ZDM12-G8DAR-DIA-0-BX-0” substation modules can be used as pulse output
ones. In this case all 8 output relays are switched to pulse output via software parameterisation.
The output frequency (pulse width /pause) can be matched to the input of the subsequent processing
system via parameterisation. ( “
Parameterisation by PC” section)
Please make sure that the pulse frequency on the input module may not be permanently
greater than the output frequency of the output module.
For higher pulses frequencies it makes sense from a durability point of view to use expansion
modules with transistor outputs (EM-G8DAL-0-BB-0) for outputting.
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