Omron GRT1 - 27-11-2006 Operation Manual page 54

Station Address Settings and I/O Allocation
Allocated Data Size
Status Flags
Communication Unit's
Status Flags
Bit Content
0 SmartSlice I/O Bus Communication Error
Flag
1 Reserved
2 SmartSlice I/O Unit Warning Flag
0: Normal
1: Error detected
3 Reserved
4 SmartSlice I/O Unit Alarm Flag
0: Normal
1: Error detected
5~11 Reserved
12 Unit Maintenance Flag
0: Normal
1: Error (monitor value reached)
13 Automatic Restore Monitor Flag
0: Restore successful
1: Restore failed
14 Communication Unit Error Flag
0: Normal
1: Error occurred
15 I/O Refreshing Flag
0: I/O communication stopped
1: I/O communication normal
Data type
I/O data (input and output)
Communication Unit status flags
SmartSlice I/O Unit communica-
tion participating/withdrawn flags
I/O data (inputs) + Communication
Unit status flags
There are two types of status flags
• Communication Unit's status flags, transferred with the Input data.
• I/O Unit's communication participating/withdrawn flags, obtained through
messaging services.
These flags can be used to monitor the status of the connection between the
GRT1-PRT and the SmartSlice I/O Units as well as the status of the Smart-
Slice I/O Units themselves. The status flags take up 1 word and the informa-
tion is transferred to the Master as part of the Input data. The table below
defines the individual bits in the Status word..
Monitors the status of SmartSlice I/O System communication.
---
Indicates a major SmartSlice I/O Unit error. This flag goes ON when
there is an error in any one of the connected SmartSlice I/O Units.
---
Indicates a minor SmartSlice I/O Unit error. This flag goes ON when
there is an error in any one of the connected SmartSlice I/O Units.
---
Monitors the Unit's operating time the power ON time threshold set with
the Unit power ON time monitor function.
Indicates whether or not the automatic parameter restoration to the
SmartSlice I/O Units was completed successfully.
This is the overall Unit status flag. This flag will be ON if any one of the
other flags (bits 0 to 13) is ON.
Indicates whether I/O data is being exchanged normally.
Data size
64 input words max. or 64 output words max.
GRT1-ID4(-1) / GRT1-OD4(-1): 4 bits per Unit.
GRT1-ROS2: 2 bits.
GRT1-AD2: 1, 2 or 3 words I/O data.
GRT1-DA2V/DA2C: 2 words output data.
1 word
Participating flags: 4 words
Withdrawn flags: 4 words
Total: 8 words
Amount of I/O data being used + 1 word
Description
Section 3-1
35