Toshiba S20LP - Manual (Page 57)

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6 F 3 B 0 3 5 6
(7) PC link protocol transmission (Data read)
The T series PC link protocol allows a T2N or T3H on a network to read register data from
another T2N’s or T3H’s registers into its own registers.
•
Register read request (using the RECV instruction)
(a) Function
The register data designated by the remote station (T2N/T3H) is read to the designated
register on the local station (T2N/T3H).
(b) Transfer parameters
A 2 ¨ H Module designation
A+1 CMD = 0000H Command number: Normally 0H; request to loopback 000FH
A+2 Transfer Size 1) Transfer register data length: 1 to 128 words
A+3 Register type (self-station) 2) Local station register type code
A+4 Leading address (self-station) 3) Local station leading address
A+5 Register type (target-station) 4) Remote station register type code
A+6 Leading address (target-station) 5) Remote station leading address
A+7 Response time limit 6) Response time limit
1) Transferred register data length
Designates the transmission data length in word units. (1 to 128 words)
2) Local station register type code
This code indicates the type of register in which the local station transmission source data
is stored.
3) Local station leading address
Designates the leading address of the register designated by the local station register type
code.
4) Remote station register type code
This code designates the type of register at the remote station to which the transmitted data
will be written. (see 7.3(6))Local station register code)
5) Remote station leading address
Designates the leading address of the register designated by the remote station register type
code.