Flexim FLUXUS ADM 5 07 Series, Дополнение к руководству пользователя

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Modbus Server Supplement to User Manual - ENGLISH
74 SU_ModbusV2-8, 2015-03-02
11 Special Functions
11.1 CRT Function
With the Modbus firmware version 1.20 and higher, the Modbus server is equipped with the CRT function (CRT: Customer
Register Table).
With this function, it is possible to use user-defined register addresses which have previously been selected an created
with the CRT editor.
Max. 200 user-defined register addresses can be created. For creating the user-defined register addresses using the CRT
editor see annex B.
The user-defined register addresses can be transmitted to the transmitter via the RS485 interface by means of the CRT
editor. If the RS485 cable cannot be connected to the PC, use the RS485/USB adapter.
Special Modbus register addresses are reserved for the configuration and management of the CRT function (see Tab.
11.1). They are not available as user-defined register addresses.
The CRT can be activated or deactivated. If the CRT function is activated, the transmitter only responds to the user-de-
fined register addresses. In that case, the standard register addresses are no longer valid.
By using user-defined register addresses, data from non-continuous Modbus register address ranges can be combined
and be made available with one request.
11.2 Resetting the Totalizers
The totalizers of the transmitter can be reset to zero with a request.
The corresponding hexadecimal code is written into the Modbus registers (see Tab. 11.2).
• Write the hexadecimal code for the channel whose totalizer is to be reset into the Modbus register with the Modbus reg-
ister address 100.
• Write the hexadecimal code for the totalizer which is to be reset into the Modbus register with the Modbus register ad-
dress 101.
• Write 0x01 into the Modbus register with the address 220. This register has to be written last. Otherwise, the totalizer will
not be reset.
Tab. 11.1: Reserved Modbus register addresses
Modbus register address function
64000...64399 R/W storage location for the CRT configuration
All created links are stored at these register addresses.
They can be read out individually at any time.
The CRT function can be activated or deactivated.
65535 R/W activate CRT
1 - active
0 - inactive
65534 W delete CRT
2 steps:
• write a 0
• write a 1
65532 R/W configuration date CRT
65530 R number of entries in the CRT
65533, 65531, 65529 - reserved register addresses
Note! The totalizer cannot be reset if the CRT function is activated. For the deactivation of the CRT function
see Tab. 11.1.