Technical data

SFBs for Compact CPUs
System Software for S7-300/400 System and Standard Functions - Volume 2/2
28-68 A5E00739858-01
Error in the SFB parameter configuration"
W#16#0809
Only for 3964(R):
The delay time for block repetition has
expired
Declare the same block delay time in the
parameters for the communication partner
and your module. Prove the faulty behavior of
the partner if required by hooking up an
interface tester to the data link.
W#16#080A There is no free input buffer:
There was no cleared input buffer
available for receiving.
The SFB RCV must be called more
frequently.
W#16#080C Transfer error
• A transfer error was detected
(parity/stop bit/overflow error).
Only for 3964(R):
• If a disrupted character is received
while in idle mode the error is
reported immediately in order to
recognize disturbing influences on
the data link as soon as possible.
Only for 3964(R):
• The repetitions are started if this
happens during send and receive
operations.
Disturbances on the data link cause message
frame repetitions and, thus, reduce user data
throughput. The risk of not detecting an error
increases. Change your system structure or
your wiring.
Check the data links of the communication
partners or whether the same baud rate,
parity and stop bits are set on both devices.
W#16#080D BREAK:
The receive link to the partner is
interrupted.
Establish the link again or switch on the
partner.
W#16#080E Input buffer overflow while flow control
is not enabled.
The SFB for receiving must be called more
frequently in the user program or you must
assign parameters with flow control to the
communication.
W#16#0810 Parity error Check the data links of the communication
partners or whether the same baud rate,
parity and stop bits are set on both devices.
W#16#0811 Character frame error Check the data links of the communication
partners or whether the same baud rate,
parity and stop bits are set on both devices.
Change your system structure or your wiring.
W#16#0812 Only for ASCII drivers:
Further characters were received after
the CPU has transmitted XOFF.
Re-assign the parameters in the
communication partner or dispose of the data
faster.
W#16#0814 Only for ASCII drivers:
One or several message frames were
lost because operation was carried out
without flow control.
Operate with flow control as far as possible.
Utilize the entire input buffer. In the basic
parameters set the "Reaction to CPU STOP"
parameter to "Continue operation".
W#16#0816 The length of a received message
frame exceeded the maximum
specified length.
Needs to be corrected in the partner station.