Hitachi S10mini IR.LINK, Hardware Manual, Page: 27 / 74

4 USER GUIDE
4-3
Communication control program
The main functions of the communication control program are as follows:
• The communication control program communicates data with the IR.Station and boots up the
sub-OS by interrupting the CPU when a specific DI input turns from OFF to ON.
Sub-OS
When interruption from the communication control program is detected, the sub-OS starts up a
task that corresponds to a specific DI with status change (OFF to ON).
NET status table, S-register, and S-table
The communication control program sets data transmission/reception information and error
information in the NET status table, S-register, and S-table.
I/O area
The table below shows the I/O areas that can be used for I/O communication.
Name Symbol range Number of points
External input XW000 (X000) to XWFF0 (XFFF) 256 words (4,096 points)
External output YW000 (Y000) to YWFF0 (YFFF) 256 words (4,096 points)
Internal register RW000 (R000) to RWFF0 (RFFF) 256 words (4,096 points)
Global link register GW000 (G000) to GWFF0 (GFFF) 256 words (4,096 points)
Transfer register JW000 (J000) to JWFF0 (JFFF) 256 words (4,096 points)
Receive register QW000 (Q000) to QWFF0 (QFFF) 256 words (4,096 points)
Event register EW400 (E400) to EWFF0 (EFFF) 192 words (3,072 points)
Extended internal register MW000 (M000) to MWFF0 (MFFF) 256 words (4,096 points)
Function work register FW000 to FWBFF 3,072 words
Extended memory /100000 to /4FFFFF 2 M words
I/O area I/O buffer Send/Receive buffer
PI/O output
PI/O input
Interrupting task
Startup Interrupting I/O input
CPU IR.LINK IR.Station PI/O