LX3V-4DA module
10
WECON Technology Co., Ltd.
8.
Outline of FROM and TO
For a detailed description, please refer to the LX3V PLC programming manual.
1)
Read BFM
1)
m1:
Special unit or block number (K0 to K7, numbered from the MPU)
2)
m2:
Buffer memory head address (K0 to K31)
3)
D.:
Head device number of destination data. T, C, D, KnM, KnY, KnS, V and Z can be used to
designate the head device. Each device number can be qualified using an index.
4)
n:
Number of transfer points (K1 to K32) (K1 to K16 for 32-bit command)
2)
Write BFM
1)
m1, m2, n:
Same as read BFM
2)
S.:
Head device number of source data. T, C, D, KnX, KnM, KnY, KnS, V, Z, K and H can be used to
designate the head device. Each device number can be qualified using an index.
When X010 and X011 are off, transfer will not be executed, therefore the destination data value will
not be changed.
9.
Troubleshooting
If the LX3V-4DA does not operate properly, check the following items:
1)
Check the external wiring. Refer to section 3 of this manual.
BFM#30 of special unit No.1→D0
D2 and D3 →BFM#1 and #2 of special unit No.1
