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7
PROGRAMMING
7.2 Program for Refresh and for Receiving LRDP/LWTP Instruction
7 - 12
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
PREPARATORY
PROCEDURES BEFORE
OPERATION
6
LINK DATA SEND/
RECEIVE PROCESSING
AND PROCESSING TIME
7
PROGRAMMING
8
TROUBLESHOOTING
(c) Program example
Figure 7.11 Program example
Transfers W to the local module.
Transfers B to the local module.
Obtains the presence or absence status of
the refresh information table.
Saves the relevant device data in the save area.Saves the relevant device data in the save area.
At power-on, initializes B/W devices.At power-on, initializes B/W devices.
In refresh ready status, starts refresh.In refresh ready status, starts refresh.
W device transmission (First half): W device transmission (First half):
Start No. = Z0, No. of words = Z1Start No. = Z0, No. of words = Z1
Transfers W of the host station to the local module.
(First half)
W device transmission (Latter half): W device transmission (Latter half):
Start No. = Z0, No. of words = Z1Start No. = Z0, No. of words = Z1
Transfers W of the host station to the local module.
(Latter half)
Y device transmission: Start No. = Z0, No. of words = Z1Y device transmission: Start No. = Z0, No. of words = Z1
Transfers Y of the host station to the local module.
Divides the buffer memory address by 16 (bits).
B device transmission (First half): B device transmission (First half):
Start No. = Z0, No. of words = Z1Start No. = Z0, No. of words = Z1
Transfers B of the host station to the local module.
(First half)
Divides the buffer memory address by 16 (bits).
Saves the refresh information table into W.
RUN status
Refresh request
No refresh request
Refresh in execution