Specifications

II Parameters
DeviceNet Parameters
II - 136
【#29061(PR)】 Master Function Comm.Status Master function communication status
Set a device to store the following data:
<Higher byte>
The master function I/O communication status is stored.
00(HEX): OFFLINE; being initialized
40(HEX): STOP; I/O communication being stopped
C0(HEX): OPERATE; I/O communication in progress
The communication status above varies according to the auto communication start setting
(address: 0631H):
- When "0: Not automatically start" is set:
Turning the power ON automatically changes the status from OFFLINE (00(HEX)) to
STOP (40(HEX)).
Turning ON the I/O communication request (Y11) changes the state to OPERATE
(C0(HEX)).
- When "1: Automatically start" is set:
Turning the power ON automatically changes the status from OFFLINE (00(HEX)) to
OPERATE (C0(HEX)).
If a reset message is received from the network, the status automatically returns to
OFFLINE (00(HEX)) and makes transitions from OFFLINE (00(HEX)) to OPERATE
(C0(HEX)).
<Lower byte>
The network's communication status is stored.
Each bit is turned ON/OFF as follows, according to the communication status.
---Setting range---
Within the number of device points set in the PC parameter's device setting.
【#29062(PR)】 Master Function Error Inform. Master function error information
Set a device to store the following data:
<Higher byte>
The communication error code occurred in the master function is stored.
<Lower byte>
The node No. (MAC ID) of the node where the error occurred is stored.
FE, FF(HEX) (254, 255): Local node (QJ71DN91)
00 to 3F(HEX) (0 to 63): Node No. (MAC ID) of the slave node where the error occurred.
---Setting range---
Within the number of device points set in the PC parameter's device setting.
【#29063(PR)】 Bus Error Counter Bus error counter
Set a device to store the following data:
- The number of times that the illegal frame count of the CAN chip (DeviceNet's
communication chip) exceeded 96 is stored. When this value is large, it indicates that
communication is unstable.
---Setting range---
Within the number of device points set in the PC parameter's device setting.
【#29064(PR)】 Bus Off Counter Bus off counter
Set a device to store the following data:
- The number of times that the QJ71DN91 makes a transition to the Bus-off status is stored.
When this value is large, it indicates that communication is unstable.
---Setting range---
Within the number of device points set in the PC parameter's device setting.
【#29065(PR)】 Node Configuration Status Module side Transfer Cont.
Each node configuration status read word count
Set a read word count of the data where the slave node parameter settings are saved.
The standard setting is "4".
---Setting range---
0 to 4
Bit 7 6 5 4 3 2 1 0
Bit7-4: Always sets to OFF.
Bit3: Network has a fatal problem
and communication cannot be continued.
Bit2: Parameter error
Bit1: Always sets to OFF.
Bit0: There is a station with a communication error.