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User Manual

 

T201DCH50/100/300/600-MU 

 

 

ALL RIGHTS RESERVED. NO PART OF THIS PUBLICATION MAY 

BE REPRODUCED WITHOUT PRIOR PERMISSION.

 

www.seneca.it

 

Doc. MI00546-EN

 

Rev.2 

Page 10 

 

 
 

WARNING!

 

You can Write a Maximum of 2 Modbus Registers with the Write Multiple Register function (function 

16)

 

 
 

WARNING!

 

The USB Modbus configuration is fixed to 38400 baud, 8bit , No parity, 1 stop bit 

When the USB cable is inserted the RS485 will stop to communicate until the USB will be unplugged. 

 

 

MODBUS REGISTER TABLE 

5.

 

The following abbreviations are used in the register tables: 

 
MS = More significant 
LS = Less significant 
MSW = 16 most significant bits 

LSW = 16 least significant bits 
MSW* = 16 most significant or least significant bits depending on the configuration (most significant default) 

LSW* = 16 less significant or more significant bits depending on the configuration (less significant default) 
MSW = 8 most significant bits 

LSW = 8 least significant bits 
MSBIT = Most significant bit 
MSBIT = Least significant bit 

RO = Register in read-only 
RW = Read/write register 

RW** = Reading and writing register contained in flash memory, writable a maximum of 10000 times. 
Unsigned 16 bit = unsigned integer register, can take values from 0 to 65535 

Signed 16 bit = signed integer register can take values from -32768 to +32767 
Float 32 bits = 32-bit single-precision floating point register (IEEE 754) 

https://en.wikipedia.org/wiki/IEEE_754 

BIT = Boolean registry, can be 0 (false) or 1 (true) 

 

 

 

Summary of Contents for T201DCH100-MU

Page 1: ...MU T201DCH100 MU T201DCH300 MU T201DCH600 MU AC DC TRUE RMS or DC BIPOLAR CURRENT TRANSFORMER WITH MODBUS RTU PROTOCOL AND ANALOG DIGITAL OUTPUT SENECA S r l Via Austria 26 35127 Z I PADOVA PD ITALY T...

Page 2: ...on described in the installation manual carefully Seneca is not considered liable for failure breakdown accident caused because of ignorance or failure to apply the indicated requirements Seneca is no...

Page 3: ...TOCOL 9 4 4 1 Modbus RTU function code supported 9 MODBUS REGISTER TABLE 10 5 5 1 0 BASED OR 1 BASED MODBUS ADDRESSES 11 5 1 1 MODBUS ADDRESSES WITH 0 BASED CONVENTION 12 5 1 2 MODBUS ADDRESSES WITH 1...

Page 4: ...ered AC DC current transducers The look and device s function are very similar to those of an active standard Current Transformer but with the remarkable feature of measuring the DC and AC component F...

Page 5: ...ns less than 96 5 x 68 x 26 mm Baud rate for Modbus RTU from 1200 baud up to 115200 baud Start Stop Input Output Alarm Values configurable with Easy Setup software I Max Min Resettable by Modbus RTU r...

Page 6: ...p Software for configure Load Configuration DIP1 DIP2 DIP3 DIP4 DIP5 DIP6 DIP7 DIP8 FROM FLASH OFF OFF OFF OFF OFF OFF OFF OFF 3 2 Setting the RS485 Modbus RTU Station Address Dip Switch 1 4 are using...

Page 7: ...DIP6 9600 OFF OFF 19200 ON OFF 38400 OFF ON 57600 ON ON WARNING The Parity bit can not be configured with the dip switches configuration but only from the Easy Setup software By setting the dip switc...

Page 8: ...1DCH100 MU OFF OFF 50 A 100 A T201DCH100 MU OFF ON 25 A 50 A T201DCH300 MU OFF OFF 150 A 300 A T201DCH300 MU OFF ON 75 A 150 A T201DCH600 MU OFF OFF 300 A 600 A T201DCH600 MU OFF ON 150 A 300 A The fo...

Page 9: ...nput the Output voltage is 5V MODBUS RTU PROTOCOL 4 The Modbus protocol supported by the T201DCH50 100 300 600 MU is Modbus RTU Slave For more information about these protocols please refer to the Mod...

Page 10: ...icant bits LSW 16 least significant bits MSW 16 most significant or least significant bits depending on the configuration most significant default LSW 16 less significant or more significant bits depe...

Page 11: ...According to the Modbus standard the Holding Register registers are addressable from 0 to 65535 there are 2 different conventions for numbering the addresses 0 BASED and 1 BASED For greater clarity S...

Page 12: ...DDRESS OFFSET 5 1 2 MODBUS ADDRESSES WITH 1 BASED CONVENTION STANDARD The numbering is that established by the Modbus consortium and is of the type HOLDING REGISTER MODBUS ADDRESS 4x MEANING 40001 FIR...

Page 13: ...0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 5 3 MSB and LSB BYTE CONVENTION WITHIN A MODBUS HOLDING REGISTER A Modbus Holding Register consists of 16 bits with the following convention BIT 15 BIT 14 BIT 13 BIT...

Page 14: ...swap the most significant word with the least significant word therefore it is possible to obtain 40064 as LSW and 40065 as MSW 5 5 TYPE OF 32 BIT FLOATING POINT DATA IEEE 754 The IEEE 754 standard h...

Page 15: ...40001 0 FIRMWARE REVISION Firmware Revision Code Unsigned 16 bits R 40002 1 RESERVED Reserved Float32 R 40003 LSW 40004 MSW 2 3 RESERVED Reserved Unsigned 16 bits R 40005 4 COMMAND This register is us...

Page 16: ...r 600A model For example 60000 600 0 A Signed 16 Bits R 40051 50 CURRENT MIN A Minimum Current Value use register Command for reset the value The value is set to 0 at startup Float32 R 40059 LSW 40060...

Page 17: ...Window Pre Alarm BIT 3 External Window Pre Alarm Bit 4 Bit 7 Not Used BIT 8 Max Alarm BIT 9 Min Alarm BIT 10 Internal Window Alarm BIT 11 External Window Alarm BIT 12 15 Not Used Unsigned 16 bits R 0...

Page 18: ...nalog Output 1 Select Digital Output Alarm LSB TRUE RMS BIPOLAR Select from True RMS or Bipolar DC measurement mode 0 True RMS 1 Bipolar DC Unsigned 16 bits RW 0 40104 103 RESERVED Reserved Unsigned 1...

Page 19: ...ld Unsigned 16 bits RW 0 40108 107 DOUT MODE 0 Digital Output is normally Low 1 Digital Output is normally High Unsigned 16 bits RW 0 40109 108 ALARM DELAY Alarm delay in x 10ms for example write 1000...

Page 20: ...the Easy Setup software for free from www seneca it 6 1 Easy Setup Menu Connect Use the connect icon for connect the PC to the Device Note that you need a RS485 to USB converter like Seneca S117P1 or...

Page 21: ...om the dip switches configuration The parameters in the Configuration section that can be configured are Model Select between T201DCH50 MU T201DCH100 MU T201DCH300 MU T201DCH300 MU HW2 or T201DCH600 M...

Page 22: ...ON www seneca it Doc MI00546 EN Rev 2 Page 22 The parameters in the OUTPUT section that can be configured depends by the Output Type if is selected Analogic or Digital If The Output is configured in A...

Page 23: ...TION MAY BE REPRODUCED WITHOUT PRIOR PERMISSION www seneca it Doc MI00546 EN Rev 2 Page 23 For example INPUT START 20 A INPUT STOP 80 A OUTPUT START 2 V OUTPUT STOP 6 V Note that with an input of 0 A...

Page 24: ...Between NONE No Alarm active MAXIMUM Alarm if the Current is above the High Threshold MINIMUM Alarm if the Current is below the Low Threshold ACTIVE IF INTO THE WINDOW Alarm if the Current Low Thresh...

Page 25: ...uration is sent to the device you can test the actual configuration by using the icon The test configuration will acquire the measure from the Modbus registers you can also reset the MIN MAX values 6...

Page 26: ...18 07 2017 17 37 21 10 0018796920776 10 0602102279663 0 5 50327777862549 7 LOG 18 07 2017 17 37 22 9 94471645355225 10 0778799057007 0 5 50132608413696 8 LOG 18 07 2017 17 37 23 9 97722816467285 10 07...

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