ED Modbus Product Data Tables

This section provides the Modbus data tables for each supported Brainboxes ED product, showing the register addresses for different addressing schemes.

ED-588

The ED-588 provides 8 digital inputs and 8 digital outputs.

Function	Modbus Access Type	Function Codes	Logical Address	984 Style Address	IEC 61131 Address
Read digital inputs	Coil	1	0x0020 - 7	00033 - 40	%M32 - 39
Read digital inputs	Discrete input	2	0x0000 - 7	10001 - 8	N/A
Read digital inputs	Input register	4	0x0020	30033	N/A
Read DI counter values	Input register	4	0x0000 - 7	30001 - 8	N/A
Read DI counter values	Holding register	3	0x0000 - 7	40001 - 8	%MW0 - 7
Clear DI counters	Coil	5, 15	0x0200 - 7	00513 - 20	%M512 - 19
Set/read digital outputs	Coil	1, 5, 15	0x0000 - 7	00001 - 8	%M0 - 7
Set/read digital outputs	Holding register	3, 6, 16	0x0020	40033	%MW32
Output overload flags	Discrete input	2	0x0400 - 7	11025 - 32	N/A
Output overload flags	Input register	4	0x0400	31025	N/A

ED-516

The ED-516 provides 16 digital inputs.

Function	Modbus Access Type	Function Codes	Logical Address	984 Style Address	IEC 61131 Address
Read digital inputs	Coil	1	0x0020 - F	00033 - 48	%M32 - 37
Read digital inputs	Discrete input	2	0x0000 - F	10001 - 16	N/A
Read digital inputs	Input register	4	0x0020	30033	N/A
Read DI counter values	Input register	4	0x0000 - F	30001 - 16	N/A
Read DI counter values	Holding register	3	0x0000 - F	40001 - 16	%MW0 - 15
Clear DI counters	Coil	5, 15	0x0200 - F	00513 - 28	%M512 - 27

ED-538

The ED-538 provides 8 digital inputs and 4 digital outputs.

Function	Modbus Access Type	Function Codes	Logical Address	984 Style Address	IEC 61131 Address
Read digital inputs	Coil	1	0x0020 - 7	00033 - 40	%M32 - 39
Read digital inputs	Discrete input	2	0x0000 - 7	10001 - 8	N/A
Read digital inputs	Input register	4	0x0020	30033	N/A
Read DI counter values	Input register	4	0x0000 - 7	30001 - 8	N/A
Read DI counter values	Holding register	3	0x0000 - 7	40001 - 8	%MW0 - 7
Clear DI counters	Coil	5, 15	0x0200 - 7	00513 - 20	%M512 - 19
Set/read digital outputs	Coil	1, 5, 15	0x0000 - 3	00001 - 4	%M0 - 3
Set/read digital outputs	Holding register	3, 6, 16	0x0020	40033	%MW32
Output overload flags	Discrete input	2	0x0400 - 3	11025 - 8	N/A
Output overload flags	Input register	4	0x0400	31025	N/A

ED-527

The ED-527 provides 16 digital outputs.

Function	Modbus Access Type	Function Codes	Logical Address	984 Style Address	IEC 61131 Address
Set/read digital outputs	Coil	1, 5, 15	0x0000 - F	00001 - 16	%M0 - 15
Set/read digital outputs	Holding register	3, 6, 16	0x0020	40033	%MW32
Output overload flags	Discrete input	2	0x0400 - F	11025 - 40	N/A
Output overload flags	Input register	4	0x0400	31025	N/A