Special data registers/special internal relays -11, Special data registers/special internal relays – IDEC MicroSmart Pentra User Manual
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EB
S
ERVER
CPU M
ODULE
U
SER
’
S
M
ANUAL
FC9Y-B1278
5-11
5: F
UNCTION
A
REA
S
ETTINGS
Maintenance Communication Server
When Enable maintenance communication server is enabled, the standard maintenance communication server can be
configured. For details, see "Maintenance Communication Server " on page 7-1.
Server Connection
Select the communication mode for each server connection in the corresponding pull-down list box. A maximum of eight
server connections can be configured. Maintenance communication server, user communication server, or Modbus TCP
server can be selected as the communication mode. Leave the communication mode of server connections as Unused if
those connections are not used.
Client Connection
Select the communication mode for each client connection in the corresponding pull-down list box. A maximum of three
client connections can be configured. User communication client or Modbus TCP client can be selected as the
communication mode. Leave the communication mode of client connections as Unused if those connections are not
used.
For details on each communication function, see the corresponding chapter in this manual.
Special Data Registers/Special Internal Relays
Communication Mode Information
The communication mode information of the server and client connections can be confirmed with special data registers
D8278 and D8279. The communication mode information of the client connections 1 through 3 are stored in D8278. The
communication mode information of the sever connections 1 through 8 are stored in D8279.
Communication mode information for client connections 1 through 3 is stored in D8278 as follows:
Communication mode information for server connections 1 through 8 is stored in D8279 as follows.
Client 1
Client 2
Client 3
00:
Reserved
01:
User Communication
10:
Modbus TCP Client
11:
Unused
D8278
Bit 15 14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Server 1
Server 2
Server 3
Server 4
Server 5
Server 6
Server 7
Server 8
00:
Maintenance Communication
01:
User Communication
10:
Modbus TCP Server
11:
Unused
Bit 15 14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
D8279