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Chapter 2

2-2

CompoWay/F Communications Procedures

2-1

Data Format

This section describes the procedures for communications according to the CompoWay/F protocol.

• Hexadecimal values are expressed by adding the prefix H' before the number, e.g., H'02.

• Numbers shown without the H' prefix are ASCII characters. (For a table of ASCII codes, refer to the

appendix.)

• The number underneath each item in a frame indicates the number of bytes.

Command Frame

Name

Description

STX

• This code (H'02) indicates the beginning of the communications frame (text).

• Always set this character in the first byte.

• If STX is received again during reception, reception is carried out again from the point

where STX was received.

Node number

• This number specifies the transmission's destination.

• Specify the 3G3JE's communications unit number.

• A BCD value between 00 and 99 or ASCII “XX” can be set.

• Specify “XX” for a broadcast transmission. No responses will be returned for broadcast

transmissions.

• No responses will be returned from node numbers other than the ones in the above

range.

Sub-address

• The sub-address is not used with the 3G3JE.

• Always set the sub-address to “00.”

SID

• This is the service ID.

• The service ID is not used with the 3G3JE.

• Always set the service ID to “0.”

Command text

This is the command text area. For details, refer to 2-2 Structure of Command Text.

ETX

This code (H'03) indicates the end of the text.

BCC

• This is the Block Check Character.

• The BCC result is found by calculating the exclusive OR of all bytes from the node num-

ber through ETX.

STX

1

2

Node number Sub-address SID

Text

BCC calculation range

BCC

Command text

2

1

1

1

ETX

0

0

0

Summary of Contents for SYSDRIVE 3G3JV

Page 1: ...Cat No I548 E1 01 COMMUNICATIONS MANUAL 3G3JE Compact Simplified Inverters...

Page 2: ...vered to the final end user of the product After reading the manual always keep it close at hand for reference when operating the Inverter Every effort has been made to provide detailed specifications...

Page 3: ...ssumed with respect to the use of the information contained herein Moreover because OMRON is con stantly striving to improve its high quality products the information contained in this manual is subje...

Page 4: ...AS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE OMRON DISCLAIMS ALL OTHER WARRANTIES EXPRESS OR IMPLIED LIMITATIONS OF LIABILITY OMRON SHALL NOT BE RESPONSIBL...

Page 5: ...that the uses listed may be suitable for the products Outdoor use uses involving potential chemical contamination or electrical interference or conditions or uses not described in this manual Nuclear...

Page 6: ...DATA Performance data given in this manual is provided as a guide for the user in determining suitability and does not constitute a warranty It may represent the result of OMRON s test conditions and...

Page 7: ...with WARNING contained in this manual Safety Precautions Meanings of Signal Words DANGER Indicates an imminently hazardous situation which if not avoided is likely to result in serious injury or may r...

Page 8: ...es possibility of electric shock under specific conditions High Temperature Caution Indicates possibility of burns due to high temperatures under specific conditions Prohibition Disassembly Prohibitio...

Page 9: ...ing so may occasionally result in moderate fire heating or equipment dam age Do not open terminal covers while the power is being supplied or for at least one minute after the power has been turned OF...

Page 10: ...and W output terminals Doing so will damage the Inverter Do not connect any load other than a three phase inductive motor to the U V and W output terminals Do not connect an AC power supply voltage to...

Page 11: ...Exercise suitable caution Also if signals are checked during operation and a voltage is incorrectly applied to the control circuit terminals the motor may start moving unexpectedly Always check safety...

Page 12: ...hapter Contents Chapter 1 Communications Methods Provides an overview of the communications methods used for the 3G3JE Chapter 2 CompoWay F Communica tions Procedures Describes the procedures required...

Page 13: ...a 2 3 Response Frame 2 4 End Code Examples 2 5 2 2 Structure of Command Text 2 7 PDU Structure 2 7 Area Definitions 2 7 Type Code Variable Type 2 7 Addresses 2 8 Number of Elements 2 8 List of Service...

Page 14: ...Chapter 1 Communications Methods 1 1 Overview of Communications Methods...

Page 15: ...shed FINS commands used for OMRON PLCs This simplifies communications between the host com puter and components FINS Factory Interface Network Service The FINS protocol provides message communications...

Page 16: ...e sure that the communications specifications are the same for all the nodes that are connected In addition set a communications unit number for each node For details refer to the communications setti...

Page 17: ...size Torque Wire type Wire size Recommended wire size Cable M3 0 5 to 0 6 N m Stranded wire 0 2 to 1 5 mm2 AWG24 to AWG16 0 75 mm2 AWG18 Shielded twisted pair cable Item Parameter No Settings Default...

Page 18: ...communications with the host computer The communications baud rate settings are as follows 2 4 2 400 bps 4 8 4 800 bps 9 6 9 600 bps and 19 2 19 200 bps Communications Data Length This parameter sets...

Page 19: ...mode can be changed from RUN mode or adjustment mode to ini tial settings mode at any time by pressing the Mode Key for one second or longer The mode can be changed from initial settings mode to RUN...

Page 20: ...p15 p16 p17 p18 p19 p20 p21 Note Communications parameters Power ON When the power is turned ON the data display and indicators setting and monitoring indicators will all light and then the present f...

Page 21: ...s to display P16 the parameter for which the setting is to be changed in this example When the Enter Key is pressed the present set value for the selected parameter will be displayed Use the Increment...

Page 22: ...Chapter 2 CompoWay F Communications Procedures 2 1 Data Format 2 2 Structure of Command Text 2 3 Detailed Description of Services 2 4 Response Code List...

Page 23: ...umber specifies the transmission s destination Specify the 3G3JE s communications unit number A BCD value between 00 and 99 or ASCII XX can be set Specify XX for a broadcast transmission No responses...

Page 24: ...protocol Set values Negative values Data Compoway F 8 digit hexadecimal 2 s comple ment The decimal point is removed and the result is con verted to hexadecimal Example conversion 105 0 1050 H 000004...

Page 25: ...m total of bits whose received data is 1 does not match the set value of the communica tions parity bit 2 11 Framing error Stop bit is 0 1 12 Overrun error An attempt was made to transfer new data whe...

Page 26: ...address is received the response end code is 16 because a sub address error has a higher error detection priority than a format error Command Response End code is 16 sub address error Example 2 No Co...

Page 27: ...er is lacking one character Response There is no response Example 4 No Sub address and Illegal BCC If there is no sub address and the BCC is illegal the sub address will be regarded as 00 and the end...

Page 28: ...not be executed the service response PDU will contain only the MRC SRC MRES and SRES MRES and SRES will provide a response code other than a code for normal completion Area Definitions Only the varia...

Page 29: ...ed when a memory error occurs or during initial status until normal operation begins after the power is turned ON Variable type Description C0 Double word data R O read only parameters for setup area...

Page 30: ...g ends in a normal completion 0001 or 0002 The read operation is performed and processing ends in a normal comple tion Response code Name Description 0000 Normal completion No errors were found Respon...

Page 31: ...completion No errors were found Response code Error name Description 1002 Command too short The command is too short 1101 Area type error The variable type is wrong 1103 Start address out of range er...

Page 32: ...control RS 485 communications 2 Buffer Size The communications buffer size is expressed in 2 byte hexadecimal and read after being convert ed to 4 byte ASCII Buffer size 40 bytes H 0028 3 Response Co...

Page 33: ...is not being performed Response code Name Description 0000 Normal completion No errors were found Response code Error name Description 1001 Command too long The command is too long 2203 Operation erro...

Page 34: ...e commands supported by the 3G3JE are listed in the following table Refer to this table for com mand codes and related information Service Request PDU Service Response PDU Communications data length T...

Page 35: ...ni cations The Write Mode can be used only in setup area 0 The default setting for the write mode is Backup Mode Backup Mode The frequency reference is written to EEPROM using communications RAM Mode...

Page 36: ...or to 0 0 0 h The Accumulated Operating Time can be cleared only in setup area 1 3 Response Code Normal Completion Error Completion Response code Name Description 0000 Normal completion No errors were...

Page 37: ...e start address is out of range 5 1104 End address out of range error The write end address write start address number of elements exceeds the final address of the vari able area 6 1003 Number of elem...

Page 38: ...Chapter 3 Communications Data 3 1 Variable Area Setting Range List 3 2 Status...

Page 39: ...Address Name Setting range Communications notation Default Unit 0000 Frequency reference 0 0 to 120 H 00000000 to H 000004B0 10 0 Hz 0001 Output frequency H 00000000 to H 000004B0 Hz 0002 Output curre...

Page 40: ...tinue operation H 00000000 H 00000001 H 00000002 0 0009 Operation command selection 0 Operate using Digital Operator key operations 1 Operate using the STF SFR control inputs RUN STOP commands sent vi...

Page 41: ...diation fin overheat protection Cooling fan fault Braking IGBT fault Accumulated time alarm Not used Charge indication Not used Not used Not used Not triggered Not triggered Not triggered Not triggere...

Page 42: ...Chapter 4 Appendix 4 1 ASCII List...

Page 43: ...1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 0 1 2 3 4 5 6 7 0 NUL DLE SPACE 0 P p 1 SOH DC1 1 A Q a q 2 STX DC2 2 B R b r 3 ETX DC3 3 C S c s 4 EOT DC4 4 D T d t 5 ENQ NAK 5 E...

Page 44: ...ROM X 2 14 electronic thermal X elements number of 2 8 end codes 2 4 ETX 2 2 I interface 1 3 M motor overheating protection X N node number 2 2 number of elements 2 8 O Operation Command 2 13 P parame...

Page 45: ...catalog number on the front cover of the manual The following table outlines the changes made to the manual during each revision Page numbers refer to the previous version Revision code Date Revised c...

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