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■Channel
Each network module has a data area used for message communication, which is called "channel". By using multiple
channels, simultaneous access from the host station to other stations, or simultaneous reading and writing to one module are
allowed. The number of channels differ depending on network types.
■User program functions
The following shows the functions used for message communication.
Dedicated function library
CCPU_DedicatedGInst
CCPU_DedicatedJInst
mdSendEx
mdReceiveEx
Access to devices on another station
This method is used for direct access to devices on another station via a network from a user program. A network module on
another station and its control CPU module can be accessed.
User program functions
Devices on another station can be accessed from a user program using C Controller module dedicated functions.
Dedicated function library
mdDevRstEx
mdDevSetEx
mdRandREx
mdRandWEx
mdReceiveEx
mdSendEx
■Accessible range of function
For the accessible range on each network, refer to the following manual.
MELSEC iQ-R C Controller Module Programming Manual
Devices specified with a function
■Access to link devices of another station
To access a link device of another station, specify a direct link device (another station side).
Link device
Link input
Link output
Link relay
Link register
Remote input
Remote output
Remote register
Link special relay
Link special register
5 ACCESS FUNCTION USING NETWORK MODULE
86
5.3 Transient Transmission
Description
To execute dedicated instructions categorized as 'G' or 'GP'.
To execute dedicated instructions categorized as 'J' or 'JP'.
To send messages.
To receive messages.
MELSEC data link function
CC-Link IE Controller
Network
LX
DevLX(1) to DevLX(255)
LY
DevLY(1) to DevLY(255)
LB
DevLB(1) to DevLB(255)
LW
DevLW(1) to DevLW(255)
RX
RY
RWw
RWr
SB
DevLSB(1) to
DevLSB(255)
SW
DevLSW(1) to
DevLSW(255)
Description
To reset (turn OFF) bit devices.
To set (turn ON) bit devices.
To read devices randomly.
To write devices randomly.
To read devices in a batch.
To write devices in a batch.
CC-Link IE Field
MELSECNET/H
Network
network
DevLX(1) to DevLX(255)
DevLY(1) to DevLY(255)
DevLB(1) to DevLB(255)
DevLW(1) to DevLW(255)
DevLX(1) to DevLX(255)
DevLY(1) to DevLY(255)
DevLW(1) to DevLW(255)
DevLW(1) to DevLW(255)
DevLSB(1) to
DevLSB(1) to
DevLSB(255)
DevLSB(255)
DevLSW(1) to
DevLSW(1) to
DevLSW(255)
DevLSW(255)
CC-Link Network
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