![background image](http://html1.mh-extra.com/html/omron/sysmac-c1000h/sysmac-c1000h_operation-manual_743079034.webp)
26
Completion
code
Name
Meaning
00
Normal end
Data transfer was completed successfully.
01
Parameter error
SEND(90)/RECV(98) instruction operands are not within specified
ranges.
02
Transmission impossible
The System was reset during execution of the instruction or the
destination node is not in the System.
03
Destination not in System
The destination node is not in the System.
04
Busy error
The destination node is busy and cannot receive the transfer.
05
Response timeout
A response was not received within the time limit.
06
Response error
An error response was received from the destination node.
07
Communications controller error
An error occurred in the communications controller.
08
Setting error
The node address was set incorrectly.
09
CPU error
A CPU error occurred in the PC of the destination node.
Data link status is output to SR 238 through SR 241 for the operating-level-0
data link in the SYSMAC NET Link or SYSMAC LINK System. Although link
status is always output to SR 242 through SR 245 for the SYSMAC LINK
System, the status of SW3-4 on the SYSMAC NET Link Unit determines the
words used for operating level 1 of the SYSMAC NET Link System, i.e., if
SW3-4 is ON, SR 242 through SR 245 are used; if SW3-4 is OFF, SR 247
through SR 250 are used. In the C2000H Duplex System, however, one one
SYSMAC NET Link Unit can be mounted and SR 247 through SR 250 are
always used for data link status.
The meaning of each bit in these areas differs depending on whether the
data link is in a SYSMAC LINK System or SYSMAC NET Link System, as
shown below. Note that SR 247 through SR 250 are also used for PC Link
Systems, as described in the next section.
SYSMAC LINK Systems
Level 0
Level 1
Bits
00 to 03
04 to 07
08 to 11
12 to 15
SR 238
SR 242
Node 1
Node 2
Node 3
Node 4
SR 239
SR 243
Node 5
Node 6
Node 7
Node 8
SR 240
SR 244
Node 9
Node 10
Node 11
Node 12
SR 241
SR 245
Node 13
Node 14
Node 15
Node 16
Each of the above sets of four bits operates as shown below.
Leftmost bit
Middle bits
Rightmost bit
ON when data link
is active.
ON when there is
a data
communications
error.
ON when there is
a PC error.
ON when PC is in
RUN mode
SYSMAC LINK/SYSMAC
NET Link Data Link Status
SR Area
Section 3-4