Contents

CONTENTS
1. COMMUNICATIONS
- 1.1 Introduction
- 1.2 Electrical Characteristics
- 1.3 Communication Protocol
2. CABLE CONNECTION
- 2.1 Connector Pins and Signals
- 2.2 Fabrication of Communication Cable
  - 2.2.1 Configuration diagram
  - 2.2.2 Precautions for wiring
  - 2.2.3 Connection diagram
3. BASIC PROTOCOL
- 3.1 Frames
- 3.2 Character Codes
- 3.3 Send and Receive Data Format
  - 3.3.1 Reading data from the slave
  - 3.3.2 Writing data to the slave
- 3.4 Checksum
- 3.5 Retry and Time-Out Processings
  - 3.5.1 Reply contains an error code
  - 3.5.2 No reply (for longer than 300ms)
- 3.6 Initializing
- 3.7 Communication Procedure Example
4. COMMUNICATION COMMANDS
- 4.1 Read Commands
- 4.2 Write Commands
5. COMMANDS USED WITH SPECIFIC FUNCTIONS
- 5.1 Communication Procedure
- 5.2 Status Display
  - 5.2.1 Status display read
  - 5.2.2 Status display data clear
- 5.3 Diagnostic
  - 5.3.1 External I/O signal states
  - 5.3.2 Alarm history read
  - 5.3.3 Alarm history clear
  - 5.3.4 Test operation mode
- 5.4 Current Alarm
  - 5.4.1 Current alarm read
  - 5.4.2 Status display data at alarm occurrence
  - 5.4.3 Current alarm reset
- 5.5 Parameters
  - 5.5.1 Parameter read
  - 5.5.2 Parameter write
6. ERROR CODES
REVISIONS

Mitsubishi Electric MELSERVOJ2A v2 Instruction Manual

Pages 30

Year 1997

Language(s)

of 30

Instruction Manual

67 pages

30 pages