Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 143 / 478

4-7
4 Using Protocol Macros
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
4-1
Over
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c
ol Mac
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4
4-1-3 Protoco
l Str
ucture
Example: Variable Area Read (Sequence No. 610) Sequence for CompoWay/F Master Protocol
Standard System Protocol Example
Level Item Setting
Sequence Link words ---
Transmission control
parameters Modem control
Response notification
method Scan
Receive Wait Monitoring
Time Tr 3s
Receive Finished Monitor-
ing Time Tfr 3s
Send Finished Monitoring
Time Tfs 3s
Steps Step number 00
Repeat counter Reset/001
Command Send&Recv
Retry count 3
Send wait time ---
Send message SD MEM_R
Receive message RV MEM_R
Response write enable Write
Next process End
Error process Abort
Send message
SD MEM_R
Header <h> STX
Terminator <t> ETX
Error check code <c> LRC (horizontal parity) (0) (1 byte of BIN)
Length <l> ---
Address <a> $ (R (1), 2)
Message edited
* Refer to A) outside the
table for the message
structure after
MRC/SRC.
<h> + <a> + "00" + "0" + "0101" + $ ~ (R (2), 2)
+ $ (R (2), 2) + $ ~ (R (3), 4) + $ ~ (R (4), 4) + <t> + <c>
Receive message
RV MEM_R
Header <h> STX
Terminator <t> ETX
Error check code <c> LRC (horizontal parity) (0) (1 byte of BIN)
Length <l> ---
Address <a> $ (R (1), 2)
Message edited
* Refer to B) outside the
table for the message
structure after
MRC/SRC.
<h> + <a> + "00" + (*, 2) + "0101" + & (W (1), 4)
+ & (W (2), *) + <t> + <c>
Node No. SID MRC/SRC Variable type Subaddress
Read start address Number of elements Bit number
Node No. End code MRC/SRC Response code Subaddress
Read data (for number of elements)