DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
Select auto mode on PLC LINK by M1351 or manual mode by M1352 (Note that the 2
flags should not be set ON at the same time.) After this, set up the times of polling
cycle by D1431.
Finally, enable PLC LINK (M1350)
11. The Operation of Master PLC:
a) M1355 = ON indicates that connection status is user-defined. Set the linking status of
Connection ID 1~Connection ID 16 (Connection ID 1~Connection ID 32) manually by
M1360~M1375 (M1360~M1375 and M1440~M1455).
b) M1355 = OFF indicates that the linking statuses of Connection ID 1~Connection ID 16
(Connection ID 1~Connection ID 32) are auto-detected. The linking statuses of Connection
ID 1~Connection ID 32 can be monitored by M1360~M1375, and M1440~M1455.
Enable PLC LINK (M1350). Master PLC will detect the connected Slaves and store the
number of connected PLCs in D1433. The time for detection differs by number of
connected Slaves and time-out setting in D1129.
M1360~M1375 indicate the linking statuses of Connection ID 1~Connection ID 16. If
M1353 is ON, M1360~M1375 and M1440~M1455 will indicate the linking statuses of
Connection ID 1~Connection ID 32.
If no slave is detected, M1350 will be OFF and PLC LINK will be stopped.
PLC will only detect the number of slaves at the first time when M1350 turns ON.
After auto-detection is completed, master PLC starts to access each connected slave.
Once slave PLC is added after auto-detection, master PLC cannot access it unless
auto-detection is conducted again.
c) Simultaneous read/write function (M1354) has to be set up before enabling PLC LINK.
Setting up this flag during PLC LINK execution will not take effect.
d) When M1354 = ON, PLC takes Modbus Function H17 (simultaneous read/write function)
for PLC LINK communication function. If the data length to be written is set to 0, PLC will
select Modbus Function H03 (read multiple WORDs) automatically. In the same way, if
data length to be read is set to 0, PLC will select Modbus Function H06 (write single
WORD) or Modbus Function H10 (write multiple WORDs) for PLC LINK communication
function.
e) When M1353 = OFF, PLC LINK accesses the Slave with max 16 words, and the data is
automatically stored in the corresponding registers. When M1353 = ON, up to 100 words
are accessible and the user can specify the starting register for storing the read/written
data.
For example, if the register for storing the read/written data on Connection ID1 is specified
as D1480 = K500, D1496 = K800, access data length D1434 = K50, D1450 = K50,
registers of Master PLC D500~D549 will store the data read from Connection ID1, and the
data stored in D800~D849 will be written into Connection ID1.
f) Master PLC conducts reading before writing. Both reading and writing is executed
according to the range specified by user.
g) Master PLC accesses slave PLCs in order, i.e. data access moves to next slave only when
access on previous slave is completed.
h) Modbus Function H03 will be replaced by Modbus Function H04 for read/write function
code. M1700~M1715 are corresponding to Connection ID 1~16 orderly; when the status is
ON, the read/write function code can be changed from H04 to H04 for the following series.
Series
ES2-C
SS2 12SE 26SE 28SA2
V3.48 V3.48 V1.0 V3.0 V3.60 -- V1.0 V3.0
M1700~M1731 are corresponding to Connection ID 1~32 for 26SE series.
12. Auto mode and Manual mode:
a) Auto mode (M1351): when M1351 = ON, Master PLC will access connections as the
operation described above, and stop the polling till M1350 or M1351 is OFF.
b) Manual mode (M1352): When manual mode is selected, times of polling cycle in D1431
has to be set up. A full polling cycle refers to the completion of accessing all connecitons.
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