Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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V600/V620 ID Controller Protocol Appendix P
Polling Auto-read (ASCII) (Sequence No. 510 (Hex 01FE))
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. 510 before executing Sequence No. 511, 512, 513.
2. Execute Sequence No. 544 (Polling Auto-read Command Processing Cancel) to cancel the polling
auto-read.
3. Retry processing is not performed for this sequence.
Polling Auto-read Sub-command (ASCII/2) (Sequence No. 511
(Hex 01FF))
This sequence is used when the maximum number of Heads to be read from the Carrier is 2. Up to 118 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. 501 (Read (ASCII/2)). However, the leading
address No. and number of read bytes are not used and will be the value specified for sequence #510.
Receive Data Word Allocation (4th Operand of PMCR(260))
The receive data word allocation is similar to that of Sequence No. 501 (Read (ASCII/2)).
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
The CD1D must be set to 1.
+(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 76 (1 to 118 bytes)
If number of Heads is 4 or less
01 to 30 (1 to 48 bytes)
If number of Heads is 8 or less
01 to 20 (1 to 20 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