Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

Page: 737 / 781

708
V600/V620 ID Controller Protocol Appendix P
Polling Auto-read (Hex) (Sequence No. 514 (Hex 0202))
This sequence is used when the number of Heads to be read from the Carrier is from 1 to 8.
Send Data Word Allocation (3rd Operand of PMCR(260))
Receive Data Word Allocation (4th Operand of PMCR(260))
None.
Note 1. Execute Sequence No. 514 before executing Sequence No. 515, 516, 517.
2. Execute Sequence No. 544 (Polling Auto-read Command Processing Cancel) to cancel the polling
auto-read.
Polling Auto-read Sub-command (Hex/2) (Sequence No. 515
(Hex 0203))
This sequence is used when the maximum number of Heads to be read from the Carrier is 2. Up to 60 bytes of
data can be read for each Read/Write Head.
Send Data Word Allocation (3rd Operand of PMCR(260))
The send data word allocation is similar to that of Sequence No. 505 (Read (Hex/2)). However, the leading
address No. and number of read bytes are not used and will be the value specified for sequence #514.
Receive Data Word Allocation (4th Operand of PMCR(260))
The receive data word allocation is similar to that of Sequence No. 505 (Read (Hex/2)).
Note 1. Execute Sequence No. 514 before executing Sequence No. 515.
Offset Contents (data format) Data
+0 Number of send data words
(4 digits Hex) 0006 to 0022 (6 to 34 decimal)
+1 Number of Heads
(4 digits BCD) 0001 to 0008
+(4(N–1)+2) Unit No. (2 digits BCD) Arbitrary (However, there is a limit for the max-
imum Unit No. depending on the model)
+(4(N–1)+3) R/W Head CH No.
(1 digit BCD) R/W Head CH 1 designation: 1
R/W Head CH 2 designation: 2
+(4(N–1)+4) Leading address No.
(4 digits Hex) 0000 to FFFF
+(4(N–1)+5) Read bytes
(2 digits Hex) If number of Heads is 2 or less
01 to 3C (1 to 60 bytes)
If number of Heads is 4 or less
01 to 18 (1 to 24 bytes)
If number of Heads is 8 or less
01 to 0A (1 to 10 bytes)
N: Number of Heads
First word of send
data
Number of Heads
+0
+1
+2
+3
+4
+5
+(4(N–1)+2)
+(4(N–1)+3)
+(4(N–1)+4)
+(4(N–1)+5)
CH 1
Number of send data words
(Undefined) Unit No.
(Undefined)
Head CH No.
Leading address No.
(Undefined) Read bytes
~ ~
(Undefined)
Unit No.
(Undefined)
Head CH No.
Leading address No.
(Undefined) Read bytes
CH N
* N: Number of Heads