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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 Profibus-DP configuration device such as SyCon.
Service Address Size Description
Managing the downstream
Modbus network
16#0200
1 word Profibus-DP master control word
16#0202
1 word Value of the motor starter c command register
16#0204
1 word Value of the motor starter d command register
16#0206
1 word Value of the motor starter e command register
16#0208
1 word Value of the motor starter f command register
16#020A
1 word Value of the motor starter g command register
16#020C
1 word Value of the motor starter h command register
16#020E
1 word Value of the motor starter i command register
Periodic communications
—
Controlling
TeSys U motor starters
16#0210
1 word Value of the motor starter j command register
16#0212
1 byte Slave no. (16#01 to 16#08)
16#0213
1 byte Function number (16#03)
16#0214
1 word Address of the parameter to be read (16#xxxx)
Aperiodic communications
—
Reading the value of a
motor starter parameter (Q
UERY)
16#0216
1 word Number of parameters to be read (16#0001)
16#0218
1 byte Slave no. (16#01 to 16#08)
16#0219
1 byte Function number (16#06)
16#021A
1 word Address of the parameter to be written (16#xxxx)
Aperiodic communications
—
Writing the value of a
motor starter parameter (Q
UERY)
16#021C
1 word Value of the parameter to be written (16#xxxx)
16#021E
1 byte Read parameter query counter
Aperiodic communications
(“Trigger bytes” for the queries)
16#021F
1 byte Write parameter query counter
——
16#0220
…
16#02F3
1 byte
…
1 byte
Free output area
(212 bytes)
——
16#02F4
…
16#03FF
1 byte
…
1 byte
Unusable output area
(268 bytes)
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).