Procedure For Accessing Other Stations; Precautions For Accessing Other Stations - Mitsubishi Electric Melsec Q Series User Manual

3 COMMUNICATIONS VIA OTHER NETWORKS

3.4 Procedure for Accessing Other Stations

3.5 Precautions for Accessing Other Stations

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This section explains the procedure for accessing other stations via the Ethernet using the
CC-Link IE Controller Network, CC-Link IE Field Network, MELSECNET/H,
MELSECNET/10 relay communication function as well as the required processing.
(1) Setting the parameters
The parameters shown in Section 3.3 must be set using a programming tool.
(2) Accessing other stations
Access to other stations is performed from an external device/local station
Q/LCPU using the CC-Link IE Controller Network, CC-Link IE Field Network,
MELSECNET/H, MELSECNET/10 relay communication function.
REMARKS
• Access to other stations with the CC-Link IE Controller Network, CC-Link IE
Field Network, MELSECNET/H, MELSECNET/10 relay communication
function is performed using the UDP/IP protocol and data is always
communicated in binary code.
• In the data communication, the port number (for the UDP/IP port) for the
Ethernet module system is used.
• It is possible to continue accessing other stations while the initial normal
completion signal (X19) is on.
When the initial normal completion signal (X19) is turned off, the Ethernet module
forcefully closes the connection although other station is being accessed.
(3) End processing of the Ethernet module
When ending access to other station with the CC-Link IE Controller Network,
CCink IE Field Network, MELSECNET/H, MELSECNET/10 relay communication
function that has been made using a connection opened by user, execute the
close processing of the connection by seeing the User's Manual (Basic).
When the following two functions are used to access other station, the close
processing is not required.
• Communication using the data link instructions
• Communication with other stations using a programming tool
The following describes precautions when accessing other stations via the Ethernet
module using the CC-Link IE Controller Network, CC-Link IE Field Network,
MELSECNET/H, MELSECNET/10 relay communication function.
(1) Set a network number different from that of the Ethernet network system to
be set for the Ethernet module.
In addition, make sure that the same station numbers for the Ethernet
network system as those already assigned to the existing network system
mentioned above and other Ethernet are not used.
(2) Access to other stations using the CC-Link IE Controller Network, CC-Link
IE Field Network, MELSECNET/H, MELSECNET/10 relay communication
function is performed using the UDP/IP protocol and data is always
communicated in binary code.
MELSEC-Q/L
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