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6. Configuring the Gateway
Description
Service PLC input
Bit 15
...................Bit 8 Bit 7 .....................Bit 0
Managing the downstream Modbus network
%IW4.0.00
Gateway status word
%IW4.0.10
Value of the motor starter c status register
%IW4.0.20
Free memory location
%IW4.0.30
Value of the motor starter e status register
%IW4.0.40
Value of the motor starter f status register
%IW4.0.50
Value of the motor starter g status register
%IW4.0.60
Value of the motor starter h status register
%IW4.0.70
Value of the motor starter i status register
Periodic communications
—
Monitoring of
TeSys U motor starters
%IW4.0.80
Value of the motor starter j status register
%IW4.0.90
Free memory location Slave no. (16#01-16#08)
%IW4.0.10
Function number
(16#03)
Number of bytes
read (16#02)
Aperiodic communications
—
Reading the value of a motor starter
parameter (R
ESPONSE)
%IW4.0.11
Value of the parameter read (16#xxxx)
%IW4.0.12
Slave number
(16#01 to 16#08)
Function number
(16#06)
%IW4.0.13
Address of the parameter written (16#xxxx)
Aperiodic communications
—
Writing the value of a motor starter
parameter (R
ESPONSE)
%IW4.0.14
Value of the parameter written (16#xxxx)
Aperiodic communications
(“Trigger bytes” for the responses)
%IW4.0.15
Read parameter
response counter
Write parameter
response counter
%IW4.0.16
Value of the “TeSys U Status Register”
%IW4.0.17
Value of the “Complementary Status Register”
%IW4.0.18
Value of the “K7 Status Register”
%IW4.0.19
Value of the “K7 Status Register 2 (free format)”
%IW4.0.20
Value of the “K7 Status Register 3 (free format)”
%IW4.0.21
Value of the “Warning Number” register
%IW4.0.22
Value of the “Warning Register”
Periodic communications
—
Monitoring of
TeSys U motor starter d
%IW4.0.23
Value of the “Reserved : 2nd Warning Register”
8) Transferring the Profibus-DP coupler configuration: Once changes have been made to the Profibus-DP
coupler configuration, it is necessary to validate the hardware configuration of the PLC rack, and to transfer
the whole application to the Premium PLC on which the coupler is located. Please see chapter 4.2.13 Using
and Monitoring the TSX PBY 100 Coupler Configuration, page 36.
6.8.4. Increasing the Amount of Periodic Output Data
E.g.
“TeSys U n°4” motor starter. We are attempting to complete the control for this motor starter whilst retaining the
currently controlled “Command Register” (address 704 = 16#02C0), and adding the following next register, that is to
say “2nd Command Register” (address 705 = 16#02C1). The number of registers controlled is therefore increased
from 1 to 2.
There are quite a lot of operations to be carried out. They are described in order below:
1) Changing the number of registers controlled: This step consists of changing the value of the “No. of
Registers” in the “Query” and in the “Response” for the “Preset Multiple Registers” command (Modbus
command for writing values of a number of registers). Start by selecting “Starting Address” from the “Query”,
then change its value as shown at the top of the next page. AbcConf will automatically convert any value
entered in decimal to hexadecimal.
Do the same for the “Starting Address” element of the “Response”
because the gateway checks the value of this field when it receives each Modbus response. If the value does
not correspond to that of the query, the gateway will ignore the response.