10. Appendix C: Default Configuration
10.2.2. Output Data Memory Area
The gateway has 244 output bytes. Only the first 32 bytes are used. One should therefore configure only one 32- byte input/output module using a
Service | Address | Size | Description | |
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Managing the downstream | 16#0200 | 1 word | ||
Modbus network | ||||
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| 16#0202 | 1 word | Value of the motor starter c command register | |
| 16#0204 | 1 word | Value of the motor starter d command register | |
Periodic communications | 16#0206 | 1 word | Value of the motor starter e command register | |
16#0208 | 1 word | Value of the motor starter f command register | ||
— | ||||
Controlling | 16#020A | 1 word | Value of the motor starter g command register | |
TeSys U motor starters |
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16#020C | 1 word | Value of the motor starter h command register | ||
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| 16#020E | 1 word | Value of the motor starter i command register | |
| 16#0210 | 1 word | Value of the motor starter j command register | |
Aperiodic communications | 16#0212 | 1 byte | Slave no. (16#01 to 16#08) | |
16#0213 | 1 byte | Function number (16#03) | ||
— | ||||
Reading the value of a | 16#0214 | 1 word | Address of the parameter to be read (16#xxxx) | |
motor starter parameter (QUERY) |
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16#0216 | 1 word | Number of parameters to be read (16#0001) | ||
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Aperiodic communications | 16#0218 | 1 byte | Slave no. (16#01 to 16#08) | |
16#0219 | 1 byte | Function number (16#06) | ||
— | ||||
Writing the value of a | 16#021A | 1 word | Address of the parameter to be written (16#xxxx) | |
motor starter parameter (QUERY) |
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16#021C | 1 word | Value of the parameter to be written (16#xxxx) | ||
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Aperiodic communications | 16#021E | 1 byte | Read parameter query counter | |
(“Trigger bytes” for the queries) | 16#021F | 1 byte | Write parameter query counter | |
16#0220 | 1 byte | Free output area | ||
… | … | (212 bytes) | ||
| 16#02F3 | 1 byte | ||
| 16#02F4 | 1 byte | Unusable output area | |
… | … | |||
(268 bytes) | ||||
| 16#03FF | 1 byte |
10.2.3. Total Number of Modbus Queries and Responses
The total number of Modbus queries and responses is equal to 36 (2 periodic queries and 2 periodic responses for each of the 8 TeSys U motor starters, plus 2 aperiodic queries and 2 aperiodic responses for all of these motor starters). Since the total number of the Modbus queries and responses one can configure for a single gateway is limited to 50, there is only 14 spare Modbus queries and responses (that is to say the equivalent of 7 Modbus commands).
So this reserve does not allow the addition of any single Modbus command for each of the TeSys U motor starters, as this would require the use of 16 Modbus queries and responses (1 query and 1 response for each of the 8 motor starters).
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