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11. Connection to other devices
11.4 Modbus TCP
Write Single Register 0x06:
In the event of an error, Modbus TCP will send an error frame.
Fault Code
1 byte
0x90 ;Write Single Register
Exception Code
1 byte
02 or 03 or 04
Exception Code 02 = Target address is invalid, i.e.,
l
0 (the user keeps specifying addresses as one-based addresses)
l
Undefined* (please refer to table → Section "Modbus map", page 557) or
l
Un-enabled*
*For an error message, it is sufficient if only one of the requested addresses is not
unlocked or is invalid.
Exception Code 04 = Error when attempting to write to the register (marker word)**
**A write operation can always write consistent data to the image table, since this data
is protected from other modules by semaphores. In other words, as of this writing,
there is no known criterion for a "Write Single Register" error in the server.
Values are only allowed to be written if all required addresses are valid and unlocked.
Write Multiple Registers 0x10:
In the event of an error, Modbus TCP will send an error frame.
Fault Code
1 byte
0x86 ;Write Multiple Registers
Exception Code
1 byte
02 or 03 or 04
Exception Code 02 = Target address is invalid, i.e.,
l
0 (the user keeps specifying addresses as one-based addresses)
l
Undefined*(please refer to table → Section "Modbus map", page 557) or
l
Un-enabled*
Exception Code 03 = The number of registers is not >= 0x0001 and <= 0x007B
OR
Number of bytes != Number of registers x 2
Exception Code 04 = Error when attempting to write to the registers**
Values are only allowed to be written if all required addresses are valid and unlocked.
*For an error message, it is sufficient if only one of the requested addresses is not
unlocked or is invalid.
**A write operation can always write consistent data to the image table, since this data
is protected from other modules by semaphores. In other words, as of this writing,
there is no known criterion for a "write multiple registers" error in the server.
easyE4
11/18 MN050009 EN www.eaton.com
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Содержание easyE4 series
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Страница 22: ...0 1 About this manual 18 easyE4 11 18 MN050009 EN www eaton com...
Страница 40: ...1 easyE4 control relays description 1 10 Safety regulations 36 easyE4 11 18 MN050009 EN www eaton com...
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Страница 462: ...6 Function blocks 6 4 Timing and counter relay example 458 easyE4 11 18 MN050009 EN www eaton com...
Страница 490: ...7 System settings 7 16 Time and Date setting 486 easyE4 11 18 MN050009 EN www eaton com...
Страница 520: ...9 easyE4 inside 9 7 NET network 516 easyE4 11 18 MN050009 EN www eaton com...
Страница 524: ...10 Diagnostics messages of the operating system 10 2 Diagnostics buffer 520 easyE4 11 18 MN050009 EN www eaton com...
Страница 570: ...11 Connection to other devices 11 6 E mail function 566 easyE4 11 18 MN050009 EN www eaton com...
Страница 578: ...12 Faults 12 4 Functionality of the NET faulty 574 easyE4 11 18 MN050009 EN www eaton com...
Страница 582: ...13 Maintenance 13 3 Storage transport and disposal 578 easyE4 11 18 MN050009 EN www eaton com...
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