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INSTRUCTION MANUAL

(M014B01-03-15A)

Communications interface

CEM M-RS485

Содержание CEM M-RS485

Страница 1: ...INSTRUCTION MANUAL M014B01 03 15A Communications interface CEM M RS485 ...

Страница 2: ...2 CEM M RS485 Instruction Manual ...

Страница 3: ...correct handling or installation of the unit may result in injury to personnel as well as damage to the unit In particular handling with voltages applied may result in electric shock which may cause death or serious injury to personnel Defective installation or maintenance may also lead to the risk of fire Read the manual carefully prior to connecting the unit Follow all installation and maintenan...

Страница 4: ...ION 11 4 1 OPERATING PRINCIPLE 11 4 2 LED INDICATORS 11 4 3 OPTICAL COMMUNICATIONS PORT 12 4 4 RS 485 COMMUNICATIONS 12 4 4 1 MODBUS PROTOCOL 12 4 4 2 READ COMMANDS 12 4 4 3 WRITE COMMANDS 13 4 4 4 VARIABLES MODBUS 14 5 TECHNICAL FEATURES 19 6 MAINTENANCE AND TECHNICAL SERVICE 21 7 GUARANTEE 21 8 CE CERTIFICATE 22 NB The images of the units are solely for the purpose of illustration and may differ...

Страница 5: ...REVISION LOG Table 1 Revision log Date Revision Description 07 14 M014B01 03 14A Initial Version 01 15 M014B01 03 15A Changes in the following sections 4 4 4 5 Instruction Manual CEM M RS485 ...

Страница 6: ...ered with the following An installation guide If any problem is noticed upon reception immediately contact the transport company and or CIRCUTOR s after sales service 2 PRODUCT DESCRIPTION The CEM M RS485 optical electric interface converts the optical service port of any unit of the CEM range into an RS 485 port with MODBUS protocol The unit features 3 indicator LEDs POWER LINK and COMS The unit ...

Страница 7: ... accidents personal injury and damage to installations The manufacturer of the unit is not responsible for any damage resulting from failure by the user or installer to observe the warnings and or recommendations set out in this manual nor for damage resulting from the use of non original products or accessories or those made by other manufacturers If an anomaly or malfunction is detected in the u...

Страница 8: ... you must couple it to a CEM energy meter as shown in Figure 1 and Figure 2 Figure 1 Coupling the CEM M RS485 to a CEM energy meter Figure 2 Coupled CEM M RS485 and CEM Terminals opening covers or removing elements can expose parts that are hazardous to the touch while the unit is powered Do not use the unit until it is fully installed 8 CEM M RS485 Instruction Manual ...

Страница 9: ...t and must be easily accessible The power circuit is connected with a cable with a section measuring up to 2 5 mm2 The RS 485 connector enables cables of up to 1 5 mm 2 to be inserted The unit s operating temperature is between 25ºC and 70ºC always use con nection cables that can withstand these temperatures 3 3 UNIT TERMINALS Table 2 List of CEM M RS485 terminals Unit terminals 1 Auxiliary power ...

Страница 10: ...master unit A maximum of 32 units can be connected to this bus Use an intelligent RS 232 to RS 485 network protocol converter to establish communications with the master unit PC B A RS 485 CEM M RS485 Alimentación Power Supply A B RS 232 USB Ethernet Profibus RS 485 RS 485 RS 232 USB Ethernet Profibus Figure 4 CEM M RS485 connection diagram 10 CEM M RS485 Instruction Manual ...

Страница 11: ...EM energy meter See 3 2 INSTALLATION the LINK LED turns green to let the user know that the link has been made correctly From this point onward the new CEM energy meter CEM M RS485 assembly functions as a single device This assembly operates the same as any standard slave device with a RS 485 bus responding to MODBUS requests from the bus s master peripheral 4 2 LED INDICATORS The unit has three i...

Страница 12: ...ultiple units where there is a master and multiple slaves Within the MODBUS protocol the CEM M RS485 uses the RTU Remote Terminal Unit mode In RTU mode message starts and ends are detected with silences of at least 3 5 characters and the 16 bit CRC error detection method is used The MODBUS functions implemented in the unit are Functions 03 and 04 Reading logs Function 10 Writing multiple logs 4 4 ...

Страница 13: ...unit s Modbus variables are specified in Table 4 Example Changing the Modbus address of peripheral 01 to the address 0x000A We will send the following Modbus frame Address Function Initial log Log no No bytes Data CRC 01 10 03E8 0001 02 000A CRC The unit will respond to us with the next frame Address Function Initial log Log no CRC 01 10 03E8 0001 CRC Note The values are shown in hexadecimal The n...

Страница 14: ... 0 0000 9 0000 with 4 decimal places of resolution Note Some MODBUS variables may not be available depending on the CEM energy meter coupled to the CEM M RS485 See 4 4 4 7 Available addresses by unit 4 4 4 2 Energy The Read function is implemented for these variables Table 5 Modbus variables Energy Description Address Size Units Total values Imported active energy 0x0000 32 bits Wh Exported active...

Страница 15: ...ecimal place Phase 3 voltage 0x0736 32 bits V 1 primary decimal place Phase 1 current 0x0738 32 bits A 2 primary decimal places Phase 2 current 0x073A 32 bits A 2 primary decimal places Phase 3 current 0x073C 32 bits A 2 primary decimal places Phase 1 cos φ 0x073E 32 bits 2 decimal places Phase 2 cos φ 0x0740 32 bits 2 decimal places Phase 3 cos φ 0x0742 32 bits 2 decimal places Phase 1 active pow...

Страница 16: ...rsion Higher firmware version 0x0578 16 bits Lower firmware version 0x0579 16 bits Revised firmware version 0x057A 16 bits Note Some MODBUS variables may not be available depending on the CEM energy meter coupled to the CEM M RS485 See 4 4 4 7 Available addresses by unit 1 Energy meter model description table Table 9 Table 9 Energy meter model description table Options C10 C20 C30 bytes in ASCII f...

Страница 17: ...nergy reset 0x0800 0xFF00 4 4 4 7 Available addresses by unit Table 11 Modbus variables Available addresses by unit Address C10 C20 C30 Description 0x03E8 Modbus Address 0x03E9 Transmission speed 0x03EA Communications configuration 0x0080 Impulse output type 0x0081 Impulse output weight 0x00B0 Cost per kWh 0x00B2 KgCO2 0x0000 Imported active energy 0x0002 Exported active energy 0x0004 Q1 reactive ...

Страница 18: ...hase 1 active power 0x0748 Phase 2 active power 0x074A Phase 3 active power 0x074C Total active power 0x074E Phase 1 reactive power 0x0750 Phase 2 reactive power 0x0752 Phase 3 reactive power 0x0754 Total reactive power 0x0756 Phase 1 apparent power 0x0758 Phase 2 apparent power 0x075A Phase 3 apparent power 0x075C Total apparent power 0xF010 Energy meter model 0x2710 Serial no 0x044C Voltage prim...

Страница 19: ... Operating temperature 25ºC 70ºC Storage temperature 35ºC 80ºC Relative humidity non condensing 5 95 Maximum altitude 2 000 m Mechanical features Dimensions Figure 6 Enclosure ABS V0 polycarbonate Weight 115 gr Protection degree IP 51 installed IP 40 in the terminal area Standards Safety requirements for electrical units for measurement control and laboratory use Part 1 General requirements EN 610...

Страница 20: ...35 90 45 35 5 5 44 61 65 Figure 6 CEM M RS 485 dimensions 20 CEM M RS485 Instruction Manual ...

Страница 21: ... or improper usage of the unit Consequently this guarantee does not apply to failures occurring in the following cases Overvoltages and or electrical disturbances in the supply Water if the product does not have the appropriate IP classification Poor ventilation and or excessive temperatures Improper installation and or lack of maintenance Buyer repairs or modifications without the manufacturer s ...

Страница 22: ...8 CE CERTIFICATE 22 CEM M RS485 Instruction Manual ...

Страница 23: ...23 Instruction Manual CEM M RS485 ...

Страница 24: ...24 CEM M RS485 Instruction Manual ...

Страница 25: ...25 Instruction Manual CEM M RS485 ...

Страница 26: ...CIRCUTOR SA Vial Sant Jordi s n 08232 Viladecavalls Barcelona Tel 34 93 745 29 00 Fax 34 93 745 29 14 www circutor es central circutor es ...

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