Yaskawa Profibus-DP Option Card CM061 - Manual (Page 34)

Network Communications 3-10
3 Word I/Os Message
The 3 word I/Os, combined input/output, messages have only one fixed area. This is the most frequently used data and is referred to as the
fast I/O data. 3 Word messages are used when processor memory is a critical factor in the network design. As shown below, the 3 word I/Os
message contains only the minimum drive data.
Table 3.12 – PROFIBUS-DP 3 Word Message I/O Table
OUTPUT DATA PROFIBUS-DP Master -> Drive Drive INPUT DATA -> PROFIBUS-DP Master
Byte Function Byte Function
0 RUN Operation Command MSB 0 Drive Status MSB
1 RUN Operation Command LSB 1 Drive Status LSB
2 Frequency Reference MSB 2 Frequency Feedback MSB
3 Frequency Reference LSB 3 Frequency Feedback LSB
4 Torque Reference MSB 4 Output Current MSB
Fast I/O
5 Torque Reference LSB
Fast I/O
5 Output Current LSB
# Fast I/O Output Data
The fast I/O output data area is used to transfer parameter data directly to the drive via a dual port RAM interface. The following table
details the functions of the fast I/O output data (Bytes 0 to 5) For detailed explanation of the terminal and multi-function inputs and outputs,
refer to the appropriate drive technical manual.
Table 3.13 – 3 Word Input/Output Message Fast I/O Output Data
Fast I/O Output Data (PROFIBUS-DP Master -> Drive)
Byte Function Bit Note
0h Fwd Run/Stop 1 = RUN Forward (Enabled when b1-02 is set to 3)
1h Rev Run/Stop 1 = RUN Reverse (Enabled when b1-02 is set to 3)
2h Multi-Function Input 3 1 = Close
3h Multi-Function Input 4 1 = Close
4h Multi-Function Input 5 1 = Close
5h Multi-Function Input 6 1 = Close
6h Multi-Function Input 7 1 = Close
0
7h Multi-Function Input 8 1 = Close (F7U and G7 drives only)
8h External Fault 1 = External Error
9h Fault Reset 1 = Reset Fault
Ah Multi-Function Input 9 1 = Close (G7 drive only)
Bh Multi-Function Input 10 1 = Close (G7 drive only)
Ch Multi-Function Input 11 1 = Close (G7 drive only)
Dh Multi-Function Input 12 1 = Close (G7 drive only)
Eh Clear Error Log
1
Command
Reference
Fh External Base Block
2 Frequency Reference MSB
3
Frequency
Reference
Frequency Reference LS
1 = 0.01Hz
scaling is dependent on the setting of parameter o1-03
4 Torque Reference MSB
5
Torque
Reference
Torque Reference LSB
Flux Vector Mode