Table of Contents Data Communications with the Watlow Series 988 Family of Controllers
III
Table of Contents
Data Communications with the Watlow Series 988 Family of Controllers
Chapter 1
Introduction to Data Communications
1.1 Machine-to-Machine Communication
1.1 Protocol
1.1 A Protocol Example
1.3 RS-232, EIA-485 and RS-422 Interfaces
1.4 ASCII
1.4 Parity Bit
1.5 Start and Stop Bits
1.5 Baud Rate
1.5 Computer Languages
1.5 Syntax
1.6 ASCII Control Character Definitions
1.6 Data Communications Conversation
Chapter 2
Hardware and Wiring
2.1 Serial Hardware Interfaces
2.1 Your Computer’s Serial Interface
2.1 Communications Wiring
2.2 RS-232 Interface Wiring
2.3 EIA-485 Interface Wiring
2.4 RS-422 Interface Wiring
Chapter 3
Communications Setup
3.1 Connecting the Controller and Computer
3.1 Software Protocols and Device Addresses
3.2 Communications Software
3.2 Setup at the Controller's Front Panel
Chapter 4
Sending Commands
4.1 General Message Syntax
4.1 Message Syntax
4.1 Data Rules
4.1 Command List
4.2 Example Format
4.2 XON/XOFF Protocol for RS-232
4.2 How to Communicate Using XON/XOFF
4.3 How to Communicate Using ANSI X3.28
4.4 Device Addresses
4.5 ANSI X3.28 Protocol Example
4.6 Modbus RTU
4.10 Cyclical Redundancy Checksum (CRC)
Algorithm
Chapter 5
Command Summary of the Series 981-984
5.1 Complete Parameter Download Sequence
5.2 Run/Hold Mode and Prompt Accessibility
5.3 Ramping Controller Prompt Table
5.12 Ramping Controller MTR Command
5.13 Ramping Controller STP Command
5.14 Ramping Controller Commands Table
5.16 Modbus RTU Address Table
Chapter 6
Command Summary of the Series 986-989
6.1 Complete Parameter Download Sequence
6.2 Temperature/process Controller Prompt Table
6.13 Modbus RTU Address Table
Chapter 7
Command Summary of the Series 996-999
7.1 Complete Parameter Download Sequence
7.2 Dual Channel Controller Prompt Table
7.12 Modbus RTU Address Table
Appendix
A.1 Handling Communications Error Codes
A.1 User Responsibility
A.2 ASCII Characters
A.3 Index
To Next Page
Loading...
