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3-4-1 SYSMAC NET/SYSMAC LINK System
Loop Status SR 236 provides the local node loop status for SYSMAC NET Systems, as
shown below.
--- Bit in SR 236
Level 0 07 06 05 04 03 02 01 00
Level 1 15 14 13 12 11 10 09 08
Status/
Meaning
1 1 Central Power Supply
0: Connected
1: Not connected
1 Loop Status
11: Normal loop
10: Downstream backloop
01: Upstream backloop
00: Loop error
Reception Status
0: Reception enabled
1: Reception disabled
1
Completion Codes SR 23700 to SR23707 provide the SEND/RECV completion code for operating
level 0 and SR 23708 to SR 23215 provide the SEND/RECV completion code for
operating level 1. The completion codes are as given in the following tables.
SYSMAC LINK
Code Item Meaning
00 Normal end Processing ended normally.
01 Parameter error Parameters for network communication instruction is
not within acceptable ranges.
02 Unable to send Unit reset during command processing or local node
in not in network.
03 Destination not in
network
Destination node is not in network.
04 Busy error The destination node is processing data and cannot
receive the command.
05 Response timeout The response monitoring time was exceeded.
06 Response error There was an error in the response received from
the destination node.
07 Communications
controller error
An error occurred in the communications controller.
08 Setting error There is an error in the node address settings.
09 PC error An error occurred in the CPU Unit of the destination
node.
SYSMAC NET
Code Item Meaning
00 Normal end Processing ended normally.
01 Parameter error Parameters for network communication instruction is
not within acceptable ranges.
02 Routing error There is a mistake in the routing tables for
connection to a remote network.
03 Busy error The destination node is processing data and cannot
receive the command.
04 Send error (token
lost)
The token was not received from the Line Server.
05 Loop error An error occurred in the communications loop.
06 No response The destination node does not exist or the response
monitoring time was exceeded.
07 Response error There is an error in the response format.
SR (Special Relay) Area Section 3-4