Parameters For The Em 4 F-Do Dc24V/2A Profisafe - Siemens SIMATIC ET 200S Installation And Operating Manual

Fail-Safe Modules
7.6 4 F-DO DC24V/2A PROFIsafe digital electronic module
7.6.4

Parameters for the EM 4 F-DO DC24V/2A PROFIsafe

Parameters in STEP 7
The following table shows the parameters that can be set for the F-DO module (see also
Section 4
Table 7-29
Parameter
F Parameter:
F_destination_address
F monitoring time
Module Parameters:
Behavior after channel faults*
Channel fault
Readback Time
Diagnostics: Wire break
* This setting is only relevant when S7 Distributed Safety V5.4 or higher is installed.
Readback Time Parameter
Each output channel has its own selectable readback time. This time specifies the maximum
duration of the turn off test for the corresponding channel and therefore also the readback
time for turning off the channel.
The following readback times can be set: 1 ms, 5 ms, 10 ms, 50 ms, 100 ms, 200 ms and
400 ms.
You should set an adequately high readback time if the channel involved switches high
capacitive loads. If the readback time for a controlled capacitive load is set too low, the
output channel is passivated because the discharge of the capacitance does not take place
within the turn off test.
If the readback signals are incorrect, the "short circuit" fault causes passivation of the output
channel after the readback time elapses.
7-88
).
Parameters of the F-DO module
Range Default
1 to 1022 Assigned
by STEP 7
10 to 10000 ms 150 ms
Passivate the entire Passivate
module/Passivate the the entire
channel module
Activated/deactivated Activated
1 to 400 ms 1 ms
Activated/deactivated Deactiv-
ated
ET 200S Distributed I/O System - Fail-Safe Modules
Hardware Installation and Operating Manual, 07/2005, A5E00103686-04
Type of Effective
Parameter range
Static Module
Static Module
Static Module
Static Channel
Static Channel
Static Channel