Network Card User's Manual

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6 F 3 B 0 3 5 6
(Note 1) ERF is the S0051 special relay. See the T-series Instruction Set for information on ERF
usage.
(Note 2) For these instructions, instruction execution starts at the point the input changes state
from off to on.
(Note 3) Since these instructions span multiple scans, applications must hold the input in the on
state until the output goes to the on state.
(Note 4) After instruction execution terminates, it is possible to start execution again by applying
a new input.
(4) Transfer parameters (A)
The data required for a request to the S20LP-station is set up in an area that starts in the
register indicated by [A]. Then the application executes a SEND or RECV instruction. Here
we present an overview of the structure of the transfer parameters.
Module designation: Designates the S20LP module in the T2N/T3H.
2 (Module ID): Must be set to 2 for an S20LP-station.
o(channel number): The values 1 and 2 are allocated in order starting closest to
the T3H. T2N must be set to 1.
(station number): This two-digit field set to another station number.
(Note 5) Do not modify the contents of the transfer parameters while an instruction execution is
in progress.
A 2o H
Module designation
A + 1
CMD
Command number: Normally 0H; request to loopback 000FH
A + 2
A + 3
M
Parameters
Parameters: This data differs depending on the type of
the request to the S20LP-station.