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Warning
If a processing error occurs for FB SIWA_FTA, we have to assume that the
variables that have been output do not correspond with the actual status in the
module.
8.4.22 START_UP:= "DB_SCALE".bo_START_UP_IN_PROGRESS
Communication between the SIWAREX FTA and the FB SIWA_FTA is
synchronised when the SIWAREX FTA module is restarted (normally when the
SIMATIC CPU is started). The bit can be output for more than one cycle.
8.4.23 CMD_EN:= "DB_SCALE".bo_CMD_ENABLE
After entering the command number in the CMD_IN:= "DB_SCALE".i_CMD_INPUT
variable, the execution of the command is triggered with this bit. To prevent the
command from being triggered more than one time, the bit should be created as an
edge. The FB SIWA_FTA does not delete the command number, it resets the
trigger variable CMD_EN:= "DB_SCALE".bo_CMD_ENABLE after the command is
finished.
8.4.24 ERR_MSG_Q:= "DB_SCALE".bo_ERR_MSG_QUIT
After evaluating a message with variable ERR_MSG_C:=
"DB_SCALE".b_ERR_MSG_CODE the user acknowledges this message.
FB SIWA_FTA can then output the next message.
8.5 Allocation in the Scale DB
There are variables that are available in the SIMATIC in the scales DB. The
allocation corresponds with the data record structure. The variable designation is in
English.
8.6 Calibratable weight display for WinCC flexible
For displaying the calibratable weight value, the same device that the operator
uses for running the system can be used.
The legal for trade main display for one or more scales can be created in S7
classic with the devices according to the following table:
Operator panel
TP170B color
TP170B mono
TP170A
OP170B mono
TP 177A 6''
TP 177A 6''
(Portrait)
TP177B mono
SIWAREX FTA
WinCC flexible Version
2005
2007
2008
yes
yes
yes
yes
yes
yes
no
no
no
yes
yes
yes
no
no
no
no
no
no
yes
yes
yes
Programming in SIMATIC STEP 7
2008 SP1
2008 SP2
no
yes
no
yes
no
no
no
yes
no
no
no
no
yes
yes
2008 SP3
yes
yes
no
yes
no
no
yes
8-165
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