ELC Programming Manual
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M1355 = ON, Slave status is user-defined. Set the linking status of Slave manually by
M1360~M1375. M1355 = OFF, Slave status is auto-detected. Linking status of Slave
can be monitored by M1360~M1375.
Select auto mode on ELC LINK by M1351 or manual mode by M1352. Then, set up the
times of polling cycle by D1431.
Start MASTER ELC LINK (M1350)
Master ELC action explanation:
1. M1353=ON, Enable the function of more than 32 stations connected to ELC LINK.
2. M1355 = ON, Slave status is user-defined. Set the linking status of Slave manually by
M1360~M1375 (M1440 ~ M1455).
Select auto mode on ELC LINK by M1351 or manual mode by M1352. Auto mode and
manual mode should not be enabled at the same time.
Enable ELC LINK (M1350). The linking status is specified by M1360~M1375 (M1440 ~
M1455), therefore Master ELC will access the designated Slaves according to
M1352~M1375 (M1440 ~ M1455) continuously no matter how many Slave ELC are
physically connected.
3. M1355 = OFF, Slave status is auto-detected. Linking status of Slave can be monitored by
M1360~M1375, M1440 ~ M1455.
Select auto mode on ELC LINK by M1351 or manual mode by M1352. Auto mode and
manual mode should not be enabled at the same time.
Enable ELC LINK (M1350). Master ELC will detect the connected Slaves and store the
number of connected ELCs in D1433. The time for detection differs by number of
connected Slaves and time-out setting in D1129.
M1360~M1375 (M1440 ~ M1455) indicate the linking status of Slave ID 1~16 (ID 17~31)
If no slave is detected, M1350 will be OFF and ELC Link will be stopped.
ELC will only detect the number of slaves at the first time when M1350 turns ON.
After auto-detection is completed, master ELC starts to access each connected slave.
Once slave ELC is added after auto-detection, master ELC cannot access it unless
auto-detection is conducted again.
4. Synchronous read/write function (M1354) has to be set up before enabling ELC LINK. Setting
up this flag during ELC LINK execution will not take effect.
5. When M1354=ON, it will use Modbus Function H17 (synchronous read/write function) for ELC
LINK communication function. If item number for writing is set to 0, the ELC will use Modbus
Function H03 (read multiple WORDs) for ELC LINK communication function. In the same way,
if item number for reading is set to 0, the ELC will use Modbus Function H06 (write one
WORD) or Modbus Function H10 (write multiple WORDs) for ELC LINK communication
function.
6. Master ELC conducts reading before writing. Both reading and writing is executed according
to the range specified by user.
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