2. Programming Concepts
of Slaves. All the station number of the connection IDs should not be the same as the
station number of the Master PLC, which is set up in D1121/D1255.
d) When both M1353 and M1356 are ON, the station number of connection ID1~ID16 can be
specified by the user in D1900~D1915 of Master PLC. For example, when D1900~D1903 =
K3, K3, K5, K5, Master PLC will access the Slave with station number K3 for 2 times, then
the slave with station number K5 for 2 times as well. Note that all station numbers of slaves
should not be the same as the station number of the Master PLC, and M1353 must be set
ON for this function.
e) Station number selection function (M1356 = ON) is supported by versions of ES2/EX2
v1.4.2 or later, SS2/SX2 v1.2 or later, and SA2 v1.0 or later.
9. Explanation: (up to 32 connections can be supported. The models which are supported now
are DVP-12SE V1.6 and DVP-26SE V2.0)
a) PLC LINK is based on MODBUS communication protocol.
b) Baud rate and communication format of all phariferal devices connected to the Slave PLC
should be the same as the communication format of Master PLC, no matter which COM
port of Slave PLC is used.
c) When M1356 = OFF (Default), the station number of the connection ID1 can be designated
by D1399 of Master PLC through PLC LINK, and PLC will automatically assign ID2~ID16
with consecutive station numbers according to the station number of ID1. (When M1356 =
ON, the station number of the connection ID1 can be designated by D1399 of Master PLC
through PLC LINK, and PLC will automatically assign ID2~ID32 with consecutive station
numbers according to the station number of ID1). For example, if D1399 = K3, and M1353
= Off, Master PLC will send out communication commands to ID1~ID16 which carry station
number K3~K18. If D1399 = K3, and M1353 = On, In addition, Master PLC will send out
communication commands to ID1~ID32 which carry station number K3~K34. In addition,
care should be taken when setting the station number of connections. All station numbers
of slaves should not be the same as the station number of the Master PLC, which is set up
in D1121/D1255.
d) When both M1353 and M1356 are ON, the station number of ID1~ID32 can be specified by
the user in D1900~D1931 of Master PLC. For example, when D1900~D1903 = K3, K3, K5,
K5, Master PLC will access the Slave with station number K3 for 2 times, then the station
number of connections K5 for 2 times as well. Note that all station numbers of connections
should not be the same as the station number of the Master PLC (D1121/D1255), and
M1353 must be set ON for this function.
e) When M1356 is ON, the station number selection function is enabled.
10. Operation:
a) Set up the baud rates and communication formats. Master PLC and all connected Slave
PLCs should have the same communication settings. COM1_RS-232: D1036, COM2_RS-
485: D1120, COM3_RS-485: D1109.
b) Set up Master PLC ID by D1121 and the connection ID by D1399. Then, set connection ID
of each slave PLC. The ID of master PLC and slave PLC cannot be the same.
c) Set data length for accessing. (If data length is not specified, PLC will take default setting
or the previous value as the set value. For details of data length device, please refer to the
tables above)
d) Set starting address of the connection to be accessed. (Default setting for starting device
to be read: H1064 (D100); default setting for starting device to be written: H10C8 (D200).
For details of starting device, please refer to the tables above)
e) Steps to start PLC LINK:
Set ON M1354 to enable simultabeous data read/write in a polling of PLC LINK.
M1355 = ON, Slave status is user-defined. Set the linking statuses of Connection ID
1~Connection ID 16 (Connection ID 1~Connection ID 32) manually by M1360~M1375
(M1360~M1375 and M1440~M1455). M1355 = OFF, 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.
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