Advantages
● You configure this function instead of programming.
● "Monitoring" of each individual channel is possible. You can select which outputs are
"monitored".
● You can adapt the plant configuration flexibly and individually.
● Easy to service and maintain. You can enable and disable the switching cycle counter via
the user program.
● Increase in plant availability. You can schedule actuator replacement in advance for the
next maintenance cycle.Firmware version as of V1.1.0 of the moduleYou configure the switching cycle counter with the following parameters:
● Switching cycle counter enabled/disabled
● Trigger maintenance interrupt when the limit is reached
● Set limit for maintenance interruptThe module counts the switching cycles by evaluating the rising edges of an output signal. If
the module detects a rising edge, the switching cycle counter (24-bit) for the respective
channel is incremented. After an overflow of the switching cycle counter, it starts again with
0.
If you activate the "Maintenance switching cycles" parameter, the "Limit warning" of the
maintenance interrupt is triggered when the limit is exceeded. Alternatively, activate the
maintenance interrupt in the parameter data sets starting at DS 64.
The current counter states are stored on the module cyclically (approx. every 20 seconds)
and retentively. The switching cycle counters are reset each time the module is restarted
(power off/on).
You activate the function with the "Switching cycle counter" parameter or in the parameter
data sets starting at DS 64.
You can read the current counter states with data set DS 129. Data set DS 129 contains the
counter status for each channel in UDINT format.
You can read the limits for each channel in UDINT format with data set DS 130.
Data set DS 131 enables you to overwrite the current counter value for each switching cycle
counter.
You can set a limit for each switching cycle counter with the "Switching cycle limit" parameter
or with data set DS 131The example in the following figure shows the terminal assignment and the assignment of
the channels to the addresses (output byte a to output byte d).When the 24 V supply voltage is switched on at each channel, there is a "1" signal at the
module outputs for approx. 50 μs.
Tip: Using the potential jumpers
Use the potential jumpers supplied with the front connector if you want to connect the four
load groups to the same potential (non-isolated). This helps you to avoid having to terminate
two wires to one terminal.
Proceed as follows:
1. Connect the 24 V DC supply voltage to terminals 19 and 20.
2. Insert the potential jumpers between the following terminals:
Ensure that the maximum current load of 8 A per potential jumper is not exceeded.When you assign the module parameters in STEP 7, you use various parameters to specify
the module properties. The following table lists the configurable parameters. The effective
range of the configurable parameters depends on the type of configuration. The following
configurations are possible:
● Central operation with a CPU
● Distributed operation on PROFINET IO in an ET 200MP system
● Distributed operation on PROFIBUS DP in an ET 200MP system
For parameter assignment in the user program, the parameters are transferred to the
module using the WRREC instruction (parameter assignment in RUN) and data sets; see
section Parameter assignment (Page 37* If you enable diagnostics for multiple channels, you will receive an alarm surge on failure of the supply voltage because
each enabled channel will detect this fault. You can prevent this message burst by assigning the diagnostics function to
one channel onlyEnabling of the diagnostics, for lacking or insufficient supply voltage L+.
Short circuit to ground
Enabling of the diagnostics if a short-circuit of the actuator supply (CHx) to ground occurs.
Maintenance switching cycles
You use this parameter to enable the maintenance interrupt "Limit value warning" when the
switching cycle limit is violated.
You configure the limit with the parameter "Switching cycle limit" for each channel CHx.
Switching cycle counter
Channel-by-channel enable of switching cycle counter (Page 13).
Wire break
Enabling of the diagnostics if the line to the actuator is brokeDefines the limit channel-by-channel. If this value is exceeded, the "Limit value warning"
maintenance interrupt is signaled.
Enter an integer value between 0 and 16777214. Refer to the data sheet of the connected
actuator. We recommend that you do not enter this maximum value, but instead set it to 80%
or 90%, for example, so that you have enough time to replace the actuator as a preventive
measure.The module can be configured differently in STEP 7; see following table. Depending on the