3964(R) - Parameter - YASKAWA CP 341 Manual

Communication protocols
3964(R) > 3964(R) - Parameter

6.3.3 3964(R) - Parameter

Protocol
Parameter
with block check
Use default values
44
Please regard that the parameters of block check, transmission rate and of the character
frame with exception of the priority have the same settings on every communication
partner.
Please regard that the parameters of block check, transmission rate and
of the character frame with exception of the priority have the same set-
tings on every communication partner.
The following protocol variants are supported by the CP:
n Default values without block check: 3964
n Default values with block check: 3964R
n Programmable without block check: 3964
n Programmable with block check: 3964R
n Default is "Default value with block check":
– Character delay time: 220ms
– Acknowledgement delay time: 2000ms
– Setup attempts: 6
– Transmission attempts: 6
Description
Data integrity is increased by the addition sending of a
Block Check Character BCC.
If the CP 341-1CH01 recognizes the string DLE ETX BCC,
it stops receiving. The CP compares the received block
check character BCC with the longitudinal parity calculated
internally.
If the BCC is correct and no other receive errors have
occurred, the CP sends the code DLE to the communica-
tion partner. (In the event of an error, the NAK code is
sent).
If the CP recognizes at deactivated BCC the string DLE
ETX, it stops receiving and sends a DLE to the communi-
cation partner if the block was received undamaged, or an
NAK if it was damaged.
n Range of values: activated, deactivated
If activated the protocol parameters are preset by default
values. If you deactivate this option, the protocol parame-
ters are released for you to make your entries.
n Range of values: activated, deactivated
VIPA System 300S
Default value
activated
activated
HB130 | CP | 341-1CH01 | en | 18-40