APPX
Appendix 3 Buffer Memory
139
A
Output data area
■
Output data area (Un\G14336 to Un\G15359)
This area sets output data sent to DP-Slaves. (
Page 23 Data exchange function)
• Data length settings
Each station is assigned with a variable data length (in byte) according to the slave parameters configured with PROFIBUS
Configuration Tool (the "Slave Modules" window).
However, the DP-Slaves with a fixed data length is assigned it regardless of the slave parameters (the "Slave Modules"
window) setting.
• Range of data length
Data length can be set 244 bytes maximum per station and to 2048 bytes maximum in total for all the DP-Slaves.
When data length is set to an odd number of bytes, the last upper bytes are occupied.
Set to 00H for the last upper bytes.
Output data to the next station is assigned from the next buffer memory address.
Ex.
1st station: 23 bytes, 2nd station: 7 bytes
I/O data is assigned in the order of parameters configured with PROFIBUS Configuration Tool (order of FDL
address).
Modifying the parameters with PROFIBUS Configuration Tool (adding or deleting a DP-Slave) causes the
buffer memory areas to be reassigned. Review the program after modifying the parameters.
When data length is set to an odd number of bytes, upper byte leaves empty and the data from the next
station are assigned from the subsequent even address.
'Output data area' (Un\G14336 to Un\G15359) cannot be assigned to the following DP-Slaves. The addresses
for them are assigned to the DP-Slaves subsequent to them instead.
• DP-Slaves without an output data length assigned
• DP-Slaves with an output data length of 0 byte assigned
Address
Sorting order of stored data
Stored output data
b8 to b15
b0 to b7
Un\G14336
The 2nd byte for the 1st station
The 1st byte for the 1st station
Output data to the 1st station
(Output data length: 23 bytes)
Un\G14337
The 4th byte for the 1st station
The 3rd byte for the 1st station
Un\G14346
The 22nd byte for the 1st station
The 21st byte for the 1st station
Un\G14347
00H
The 23rd byte for the 1st station
Un\G14348
The 2nd byte for the 2nd station
The 1st byte for the 2nd station
Output data to the 2nd station
(Output data length: 7 bytes)
Un\G14349
The 4th byte for the 2nd station
The 3rd byte for the 2nd station
Un\G14350
The 6th byte for the 2nd station
The 5th byte for the 2nd station
Un\G14351
00H
The 7th byte for the 2nd station
to Un\G15359
Input data from the nth station
Summary of Contents for FX5-DP-M
Page 1: ...MELSEC iQ F FX5 User s Manual PROFIBUS ...
Page 2: ......
Page 9: ...7 MEMO ...
Page 12: ...10 INDEX 168 REVISIONS 170 WARRANTY 171 TRADEMARKS 172 ...
Page 13: ...11 CONTENTS ...
Page 19: ...1 DESCRIPTION 17 1 MEMO ...
Page 100: ...98 9 PROGRAMMING 9 2 DP Master settings DP Slave FDL address 2 ...
Page 101: ...9 PROGRAMMING 9 2 DP Master settings 99 9 DP Slave FDL address 3 ...
Page 108: ...106 9 PROGRAMMING 9 8 Program Example of the Global Control Function ...
Page 109: ...9 PROGRAMMING 9 8 Program Example of the Global Control Function 107 9 ...
Page 110: ...108 9 PROGRAMMING 9 8 Program Example of the Global Control Function ...
Page 112: ...110 9 PROGRAMMING 9 9 Program Example of Acyclic Communication Acyclic Communication ...
Page 114: ...112 9 PROGRAMMING 9 10 Program Example of the Alarm Acquisition Function ...
Page 169: ...APPX Appendix 4 Processing Time 167 A MEMO ...
Page 175: ......