ASCII | 3964R | RK512
Exchanging data using the SIMATIC FB’s
17
Parameter for return codes:
contain information on the status or processing results of the FB; also used to transfer
commands (e.g. reset) to the FB.
ANZW is used to convey information on the status of the currently executing data transfer
operation.
ANZW consists of 16 bits, of which bits 0, 1 and 4 are used for the coordination of a send
or receive operation as follows:
Bit 0 = 1
For FB200 and FB201:
Operation is executing
For FB203:
Telegram is being received
Bit 1 = 1
For FB200:
Operation completed,
For FB201:
Telegram has been received
For FB203:
Telegram is being sent
Bit 4 = 1
Reset the operation
Set bit 4 to 1 to cancel the operation. Bit 4 is set to 0 again by the FB
when the operation has been reset.
Bit 2, 3, 5…15
internal use by the FB, do not change
Note!
FB203 for SIMATIC S5 uses the marker areas MW200 and MW202 for inter-
nal calculations. Do not use these market areas on your PLC program.
Name Type
Description / Function
present in:
FB200
FB201
FB203
ANZW W
Status word for data transfer status
X
X
X
