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Appendix MV600/V620 ID Controller Protocol
376
Read (ASCII/4) (Sequence No. 502)
This sequence is used when the maximum number of Heads to be read from the Carrier is 4. Up to 48 bytes of data
can be read for each Read/Write Head.
Send Data Word Allocation (2nd Operand of PMCR)
First word of send
data
Number of Heads
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+14
+15
+16
+17
(Undefined)
Unit No.
(Undefined)
Unit No.
(Undefined)
Head CH No.
Leading address No.
(Undefined)
Read bytes
CH 1
CH 2
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
4 CH
Offset Contents (data format) Data
+0 Number of send data words
(4 digits BCD)
0006 to 0018
+1 Number of Heads
(4 digits BCD)
0001 to 0004
+(4(N–1)+2) Unit No. (2 digits BCD) Arbitrary (However, there is a limit for the
maximum 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 Hexadecimal)
0000 to FFFF
+(4(N–1)+5) Read bytes
(2 digits Hexadecimal)
01 to 30 (1 to 48 bytes)
N: Number of Heads
Receive Data Word Allocation (3rd Operand of PMCR)
Receive data
storage words
Number of receive data words
+0
+1
+24
+25
+48
+73
+96
~ ~
Read data
Read data
CH 1
CH 2
Read data
~ ~
Read data
~ ~
~ ~
Read data
Read data
4 CH