Basic Principles of Serial Data Transmission
2.8 Configuration data
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
80 Manual, 09/2008, A5E02191071-01
Protocol
The table below describes the protocol.
Table 2- 4 3964(R) protocol
Parameters Description Default value
3964 with default
values and no
block check
• Default values are assigned to the protocol parameters.
• If the CP 341 recognizes the string DLE ETX, it stops receiving
and sends a DLE to the communication partner if the block was
received error-free, or an NAK if an error occurred.
3964R with default
values and block
check
• Default values are assigned to the protocol parameters.
• If the CP 341 recognizes the string DLE ETX BCC, it stops
receiving. The CP 341 compares the block check character (BCC)
received with the length parity calculated internally. If the BCC is
correct and no other receive errors have occurred, the CP 341
sends the DLE character to the communication partner (the NAK
character is sent if an error occurred).
3964 assignable
without block
check
• The protocol parameters can be freely assigned by the user.
• If the CP 341 recognizes the string DLE ETX, it stops receiving
and sends a DLE to the communication partner if the block was
received error-free, or an NAK if an error occurred.
3964R assignable
with block check
• The protocol parameters can be freely assigned by the user.
• If the CP 341 recognizes the string DLE ETX BCC, it stops
receiving. The CP 341 compares the block check character (BCC)
received with the length parity calculated internally. If the BCC is
correct and no other receive errors have occurred, the CP 341
sends the DLE character to the communication partner (the NAK
character is sent if an error occurred).
3964R with default values
and block check:
Character delay time =
220 ms
Acknowledgment delay time
= 2000 ms
Connection retries = 6
Transmission retries = 6
该文档是极速PDF编辑器生成，
如果想去掉该提示,请访问并下载：
http://www.jisupdfeditor.com/
To Next Page
Loading...
