
B-63404EN/03 OPERATION 1.DeviceNet FUNCTIONS
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When the DeviceNet Slave Board B(A20B-8100-0650) is used
Table 1.3 (c): Diagnostics information
(STATUS/COMMUNICATIONS STATUS)
Item Description
00 DISABLE Disables communications.
01 ENABLE Enables communications.
(normal communications
status)
STATUS
03 ERROR Communications error has
occurred.
Check the status and error.
The display is in hexadecimal notation and consists of one byte.
The individual bits of the status information have their respective
meanings.
When the bits are 1, they mean:
#7 #6 #5 #4 #3 #2 #1 #0
[VR] [IC]
(A value enclosed in parentheses corresponds to a normal
communication status.)
#0 IC (1) : Initialization completed
IDLE/
ACTIVE
#1 VR (1) : Valid-data-being-received flag
00 OFFLINE DISABLE has been selected.
01 INITIAL COMPLETE The DeviceNet interface has
been initialized.
02 CHECK BAUDRATE A baud rate check is in
progress.
- If the specified baud rate is
incorrect, the operation is
halted in this status.
03 CHECK NODE DUPLICATION A check for a duplicate MAC-
ID specification is in
progress.
04 WAIT CONNECTION ONLINE The DeviceNet is waiting for
communication with the
master to begin.
The operation is halted in this
status if:
- A cable is broken or not
connected normally.
- The specified MAC-ID is
invalid in the master side.
- The DI/DO SIZE setting
does not match that in the
master side.
05 ONLINE Communication is effective
CONDITION
STATUS
06 WAIT CONNECTION TIMEOUT Communication is
interrupted.