--------------------------------------------------------------------------------
 ModbusTCP registers for P2520

 standard ModbusTCP port: 502

 v1.0 for firmware 7-5-0.x, 2012-09-20
--------------------------------------------------------------------------------


List of Supported Modbus commands
--------------------------------------------------------------------------------

|-------------------------------------|-------|--------------------------------|
| Command                             | Code  | Description                    |
|                                     | [HEX] |                                |
|-------------------------------------|-------|--------------------------------|
| Read Holding Register(s)            | 0x03  | Reads 16 bit register(s)       |
|-------------------------------------|-------|--------------------------------|
| Read Input Register(s)              | 0x04  | Reads 16 bit register(s)       |
|-------------------------------------|-------|--------------------------------|


Device informations
--------------------------------------------------------------------------------

|-------------------|--------|--------|-----|--------|-------------------------|
| Variable          | Adr.   | Adr.   | Nr. | Type   | Description             |
|                   | [HEX]  | [DEC]  |     |        |                         |
|-------------------|--------|--------|-----|--------|-------------------------|
| serial number     | 0x9C22 | 39970  | 1   | BCD    | 1st two digits of s/n   |
|                   | 0x9C23 | 39971  | 1   | BCD    | 2nd two digits of s/n   |
|                   | 0x9C24 | 39972  | 1   | BCD    | 3rd two digits of s/n   |
|                   | 0x9C25 | 39973  | 1   | BCD    | 4th two digits of s/n   |
|-------------------|--------|--------|-----|--------|-------------------------|
| device type       | 0x9C26 | 39974  | 1   | HEX    | 0x1105 ... P2520        |
|-------------------|--------|--------|-----|--------|-------------------------|


Measured values
--------------------------------------------------------------------------------

|-------------------|--------|--------|-----|---------|------------------------|
| Variable          | Adr.   | Adr.   | Nr. | Type    | Description            |
|                   | [HEX]  | [DEC]  |     |         |                        |
|-------------------|--------|--------|-----|---------|------------------------|
| current ch1 [uA]  | 0x9C27 | 39975  | 1   | DEC     | integer - 16bit,       |
| current ch2 [uA]  | 0x9C28 | 39976  | 1   | DEC     | error <= -32000        |
|-------------------|--------|--------|-----|---------|------------------------|
| actual value ch1  | 0x9C29 | 39977  | 2   | FLT     | IEEE754 float,         |
| actual value ch2  | 0x9C2B | 39979  | 2   | FLT     | error = -inf,          |
|                   |        |        |     |         | lower 16bit first      |
|-------------------|--------|--------|-----|---------|------------------------|
| actual value ch1  | 0x9C2D | 39981  | 1   | Int     | integer - 16bit        |
| actual value ch2  | 0x9C2E | 39982  | 1   | Int     | error <= -32000        |
|-------------------|--------|--------|-----|---------|------------------------|
| actual value ch1  | 0x9C2F | 39983  | 1   | Int*10  | integer*10 - 16bit     |
| actual value ch2  | 0x9C30 | 39984  | 1   | Int*10  | error <= -32000        |
|-------------------|--------|--------|-----|---------|------------------------|
| actual value ch1  | 0x9C31 | 39985  | 1   | Int*100 | integer*100 - 16bit    |
| actual value ch2  | 0x9C32 | 39986  | 1   | Int*100 | error <= -32000        |
|-------------------|--------|--------|-----|---------|------------------------|
| unit on ch1       | 0x9C33 | 39987  | 1   | String  | two chars from unit    |
| unit on ch2       | 0x9C34 | 39988  | 1   | String  | "dC", "dF", "RH"       |
|-------------------|--------|--------|-----|---------|------------------------|
| alarm state ch1   | 0x9C35 | 39989  | 1   | DEC     | 0 ... none             |
| alarm state ch2   | 0x9C36 | 39990  | 1   | DEC     | 1 ... high alarm       |
|                   |        |        |     |         | 2 ... low alarm        |
|-------------------|--------|--------|-----|---------|------------------------|
| unused            | 0x9C37 | 39991  | 9   |         |                        |
|                   |   ~    |   ~    |     |         |                        |
|                   | 0x9C3F | 39999  |     |         |                        |
|-------------------|--------|--------|-----|---------|------------------------|

|-------------------|--------|--------|-----|---------|------------------------|
| actual value ch1  | 0x9C40 | 40000  | 1   | Int*10  | integer - 16bit        |
| actual value ch2  | 0x9C46 | 40006  | 1   | Int*10  | error <= -32000        |
|-------------------|--------|--------|-----|---------|------------------------|
| alarm state ch1   | 0x9C41 | 40001  | 1   | String  | "no" ... none          |
| alarm state ch2   | 0x9C47 | 40007  | 1   | String  | "hi" ... high alarm    |
|                   |        |        |     |         | "lo" ... low alarm     |
|-------------------|--------|--------|-----|---------|------------------------|
| current ch1 [uA]  | 0x9C42 | 40002  | 1   | Int*10  | integer - 16bit,       |
| current ch2 [uA]  | 0x9C48 | 40008  | 1   | Int*10  | error <= -32000        |
|-------------------|--------|--------|-----|---------|------------------------|
| actual value ch1  | 0x9C43 | 40003  | 2   | 32b*100 | integer*100 - 32bit,   |
| actual value ch2  | 0x9C49 | 40009  | 2   | 32b*100 | error <= -320000000,   |
|                   |        |        |     |         | lower 16bit first      |
|-------------------|--------|--------|-----|---------|------------------------|
| unused            | 0x9C45 | 40005  | 1   |         |                        |
|                   | 0x9C4B | 40011  | 1   |         |                        |
|-------------------|--------|--------|-----|---------|------------------------|