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Appendix MV600/V620 ID Controller Protocol
374
Read (ASCII/1) (Sequence No. 500)
This sequence is used when the number of Heads to be read from the Carrier is 1.
Send Data Word Allocation (2nd Operand of PMCR)
First word of send
data
Number of send data words+0
+1
+2
+3
+4
(Undefined)
Unit No.
(Undefined)
Unit No.
(Undefined)
Head CH No.
Leading address No.
(Undefined)
Read bytes
Offset Contents (data format) Data
+0 Number of send data words
(4 digits BCD)
0005 (fixed)
+1 Unit No. (2 digits BCD) 00 to 07 (CD1D)
00 to 15 (CAjA)
+2 R/W Head channel
(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.
+3 Leading address No.
(4 digits Hexadecimal)
0000 to FFFF
+4 Read bytes
(2 digits Hexadecimal)
01 to F4 (1 to 244 bytes)
Receive Data Word Allocation (3rd Operand of PMCR)
Receive data
storage words
Number of receive data words+0
+1
+2
+122
Read data
~ ~
Read data
Read data
Offset Contents (data format) Data
+0 Number of receive data
words (4 digits BCD)
0002 to 0123
+1 to +122 Read data (ASCII) Number of read bytes stored in ASCII
Note Data from Data Carriers designated for ASCII is stored beginning with the smallest offset from the receive
data words.