Mitsubishi MELSEC-F FX2N-1RM-E-SET, Руководство пользователя

Страница: 67 / 140

BFM Assignment 7
7-3
FX
2N
-1RM-E-SET Programmable Cam Switch
*1: When two or more FX
2N
-1RM units are connected to the PLC main unit, data is read from and
written to each unit via the buffer memory of the unit nearest to the PLC main unit.
The relationship between the BFM Nos. and the units is shown below.
BFM Nos. of one or two digits: FX
2N
-1RM unit nearest to the PLC main unit
BFM Nos. of 8000 to 8999: Second FX
2N
-1RM unit
BFM Nos. of 9000 to 9999: Third FX
2N
-1RM unit
*2: BFM #100 to #105 has been included since version V2.00 (from 1998/2)
*3: BFM#106 has been included since version V2.40 (from 2002/1)
• All the buffer memories in the FX
2N
-1RM units accommodate 16-bit data. When using a
FROM/TO instruction, use a 16-bit instruction.
• When two FX
2N
-1RM is connected, the monitor cycle of BFM #8002 to #8028 becomes
about 12m seconds.
When three is connected, the monitor cycle of BFM #8002 to #8028, #9002 to #9028
becomes about 27m seconds.
However, the table is composed from PRG to RUN again at the switch and bank changing.
Therefore, the time of 4 seconds or less is required. (Only at change)