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PLC Network Instructions
Range of Control Data
Item
Number of words
Source network address
Source node address
Source unit address
Response bit
Communications port number
Number of retries
Response monitor time
100
6. Port Number
Set the communications port number that the RECV(98) instruction will be
sent to.
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 RECV(98)
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
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 permissible ranges of control data to be set are as follows:
0001 to 0100 (1 to 256 words)
0:
Local network
01 to 7F: Source network address
00:
Transmission within local PLC
01 to 3E: Source node address (1 to 62) (SYSMAC LINK)
01 to 20: Source node address (1 to 32) (Controller Link)
01 to 7E: Source node address (1 to 126) (Ethernet, SYSMAC NET)
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
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 in 0.1-s increments (set by the user)
Value
Section 6-2
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