Omron GRT1-ECT SmartSlice, Operation Manual

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8 Sysmac Studio
8 - 16 GRT1-series EtherCAT Communication Unit - Operation Manual
• Size
Communication Unit status
2 bytes for the Communication Unit status.
Additional information
Example: Three GRT1-ID4 units + One GRT1-AD2 unit + Three GRT1-OD4 units
3 x (GRT1-ID4 = 4 bits) + 1 x (GRT1-AD2 = 4 bytes) + Not Applicable.
• Total Digital Input = 3 x 4 bits = 12 bits
Convert to bytes = round (12 / 8 ) = 2 bytes
• Total Analog Input = 4 bytes
• Input for Communication Unit status = 2 bytes
IN_size = Total DI + Total DO + CommStatus
IN_size = 2 bytes + 4 bytes + 2 bytes = 8 bytes
4.
Calculate the total number of bytes for Outputs, named OUT_size.
OUT_size = Size Digital O Size Analog Outputs.
• Size Digital Outputs
The required unit is bytes, the actual unit is bits, so conversion from bits to bytes is required.
• Add all digital outputs together.
• Convert the result from bits to bytes.
= (Total number of DO / 8) and then round to next integer value.
• Size Analog Outputs
Each analog SmartSlice Output Unit uses 4 bytes.
One analog SmartSlice unit has 2 analog outputs and therefor an Analog Outputs Size of 4
bytes.
• Add all Analog outputs together.
• Multiply by 2.
• Size Counter Outputs
Each Counter SmartSlice Unit uses 6 bytes.
• Add all Counter Units together.
• Multiply by 6.
Additional information
Example: One unit GRT1-OD4 + One unit GRT1-ROS2
GRT1-OD4 = 4 bits + GRT1-ROS2 = 2 bits
Total Output bits = 6
Convert to bytes = round (6 / 8 ) = 1 byte.
Calculate the OUT_size