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PLC Network Instructions
Range of Control Data
Item
Number of words
Destination network address
Destination node address
Destination unit address
Response bit
Communications port number
Number of retries
Response monitor time
Note
98
5. Response Bit (Bit 15 of C+3)
Usually set this bit to OFF (0: response required). If you do not need any
response, set the bit to ON (1: not required).
6. Port Number
Set the communications port number that the SEND(90) instruction will be
sent from.
7. Number of Retries
Set the number of retries for unsuccessful transmissions. You can set the
number between 1 to 15. If 15 has been set, for example, the SEND(90)
instructions will be re-transmitted up to 15 times when the PLC does not
receive a response from the destination node.
8. Response Monitor Time (Unit: 0.1 S)
Designates the length of time that the PLC retries transmission when bit
15 of C+3 is OFF and no response is received. The default value is $0000,
which indicates 2 seconds. The response function is not used when the
destination node address is set to $FF, broadcasting to all nodes in the net-
work.
The permissible ranges of control data to be set are as follows:
0001 to 0100 (1 to 256 words)
00:
Local network
01 to 7F: Destination network address
00:
Transmission within local node
01 to 3E: Destination node address (1 to 62) (SYSMAC LINK)
01 to 20: Destination node address (1 to 32) (Controller Link)
01 to 7E: Destination node address (1 to 126) (Ethernet, SYSMAC NET)
FF:
Broadcasting
00:
PLC (CPU Unit)
01:
Computer (NSB) user application
10 to 1F: Unit number 0 to 15
E1:
Inner Board
FE:
Unit connected with the network
0 (OFF): Required
1 (ON):
Not required
0 to 7 (0 to 7)
0 to F (0 to 15)
0000:
2 s (default)
0001 to FFFF: 0.1 to 6,553.5 s with 0.1-s increments (set by the user)
When broadcasting, there is no response from the nodes.
Value
Section 6-2
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