Siemens SIMATIC S7 F User Manual

Fail-Safe Blocks
Fail-Safe Systems
A5E00085588-03
8-73
Name Data Type Explanation Default
SHUTDOWN BOOL Defines the response to a
detected FAILURE (rising
edge). Either a “Partial
(isolated F Run-time groups
shutdown) or “Full (entire
Safety Program shutdown).
Full (1)
RQ_FULL BOOL Manual request for entire
Safety Program shutdown. A
rising edge will force a full
shutdown. User may connect
external logic to this input.
0
F_PRG_SIG DWORD Safety Program Overall
Signature (created during
compile only – not updated
online)
0
ALARM_EN BOOL Alarm messaging enabled
allows messages to be
reported to the HMI (WINCC).
The messages (incoming and
outgoing) reported are Full
Shutdown, Partial Shutdown,
Restart of Shutdown Logic,
and Safety Mode (enabled or
disabled).
1
Outputs:
FULL_SD BOOL Entire Safety Program
shutdown when TRUE.
Latched output resettable
through RESTART input.
0
EN_INIT BOOL Required for Safety Program
initialization logic.
Immediately following the
RESTART request, EN_INIT
will remain TRUE while the
function block initialization
logic executes.
0
SAFE_M BOOL Indication of the current
system mode of operation.
1=Safety Mode, 0=Test Mode.
This output may be connected
to external logic.
0
MSG_ERR BOOL Return of SFB 34 ALARM_8
ERROR output.
0
MSG_STAT WORD Return of SFB 34 ALARM_8
STATUS output.
W#16#0000
MSG_ACK WORD Return of SFB 34 ALARM_8
ACK output.
W#16#0000
NFY_DONE BOOL Return of SFB 31 NOTIFY_8P
DONE output.
0
NFY_ERR BOOL Return of SFB 31 NOTIFY_8P
ERROR output.
0

Siemens SIMATIC S7 F Specifications

General

Brand	Siemens
Model	SIMATIC S7 F
Category	Controller
Language	English