Mitsubishi Electric AnyWire NZ2AW1C2AL, User Manual

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8 FUNCTIONS
8.2 Function Details
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8
Parameter access timing
The parameter access timing is as follows.
■
Reading device parameters
*1 Before executing parameter access from the bridge module to the slave module, store the access method, access target ID, and
parameter data in the appropriate memory areas.
*2 Use Parameter accessing flag (with handshake) (RX(n+1)B) when Parameter access completion flag (RX(n+1)1) is completed by the
program.
*3 Slave module alarm signal (RX(n+1)0) and Parameter access error (RX(n+1)2) are maintained until Error reset request flag (RY(n+D)A)
is turned on. Errors are stored in the appropriate memory areas.
No. Description
(1) Parameter access starts when the following signal is turned on by programs.
*1
• Parameter access request command for the slave module (RY(n+1)0)
(2) The operation in (1) turns off Parameter access completion flag (RX(n+1)1).
Parameter accessing flag (with handshake) (RX(n+1)B) turns on.
(3) After checking Parameter accessing flag (with handshake) (RX(n+1)B) is on, turns off the signal that is turned on in (1) by using the program.
(4) When the signal operated in (1) is off and Parameter access completion flag (RX(n+1)1) is on, Parameter accessing flag (with handshake) (RX(n+1)B)
automatically turns off.
*2
(5) If there is an error in the parameter access, one of the following signals turns on and Parameter access completion flag (RX(n+1)1) turns on
automatically.
*3
• Slave module alarm signal (RX(n+1)0)
• Parameter access error (RX(n+1)2)
(6) When Error reset request flag (RY(n+D)A) is turned on by the program, Parameter access error (RX(n+1)2) turns off.
(7) After Parameter access completion flag (RX(n+1)1) turns on in (4), the G(P).RDMSG instruction is executed by the program.
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
OFF
(1)
(3)
(2)
(4)
(5)
(6)
G(P).RDMSG
(7)
Parameter access in progress
Parameter access request command for the slave
module (RY(n+1)0)
Parameter access completion flag (RX(n+1)1)
Parameter accessing flag (with handshake) (RX(n+1)B)
Error reset request flag (RY(n+D)A)
Slave module alarm signal (RX(n+1)0),
Parameter access error (RX(n+1)2)
Executed in the program
Executed by the bridge module
G(P).RDMSG instruction