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Appendix MV600/V620 ID Controller Protocol
375
Read (ASCII/2) (Sequence No. 501)
This sequence is used when the 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 (2nd Operand of PMCR)
First word of send
data
Number of Heads
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
(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
Offset Contents (data format) Data
+0 Number of send data words
(4 digits BCD)
0006 to 0010
+1 Number of Heads
(4 digits BCD)
0001 to 0002
+(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 76 (1 to 118 bytes)
N: Number of Heads
Receive Data Word Allocation (3rd Operand of PMCR)
Receive data
storage words
Number of receive data words
+0
+1
+59
+60
+61
+119
~ ~
Read data
Read data
CH 1
CH 2
Not used
Read data
~ ~
Read data
Offset Contents (data format) Data
+0 Number of receive data
words (4 digits BCD)
0002 to 0120
+(60(N–1)+1) to
+(60(N–1)+59)
Read data (ASCII) Number of read bytes store in ASCII
N: Number of Heads
Note Data from Data Carriers designated for ASCII is stored beginning with the smallest offset from the receive
data words.