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2 Simple Application Controllers
AL-PCS/WIN-E Settings for Dedicated Protocol 6
6 - 4
B) Communication Memory
The Communication Memory option allocates a section of the user-program memory for
Communication Bit Devices or Communication Word Devices.
A maximum of 100 Function Block Bit Devices and 100 Function Block Words can be
accessed. Total memory available to the user is 5000bytes with a 200 function block limit.
C) Communication Function Block Bit Device
To Set a Communication Bit Device choose a number in the right hand “Communication Bit
Device” block, then highlight the Function Block in the “FB to be Specified” box. Click on the
“Set” button to match the Function Block to the data transmission address.
To release a Function Block, highlight the Function Block line in the right hand box and then
press the “Release” button. The Communication Bit Device Number will be cleared.
The transmit data will show whether the Function Block output signal is On or Off.
Function Blocks without outputs will not appear in the display.
Note:
No device can be chosen if the Communication Memory is specified as 0
.
Table 6.2: Communication Memory usage
Communication
Bit Device
Communication Word
Device
Memory Usage (bytes)
000
50 50 300
100 100 600