Black Box 945 User Manual

Black Box

How to Use Data Communications

2

WATLOW Series 945

Page

Item

Data Communications and the Series 945

Hardware Interfaces Protocols

Communications Wiring

RS-422A Interface Pinouts

RS-423A Interface Pinouts
(RS-232C Compatible)

EIA-485 Interface Pinouts

Connecting the Control and Computer

Setting Hardware Protocol Switches

Network Connections

Series 945 Communication Parameters

Communications Setup Parameters

ASCII and Series 945 Information

Series 945 General Message Syntax

XON/XOFF Protocol for RS-423A

Start and Stop Communicating with the
Series 945 and XON/XOFF

XON/XOFF "=" Command Example

XON/XOFF "?" Command Example

ANSI X3.28 Protocol for RS-422 & EIA-485

Starting Communications in ANSI X3.28

Stopping Communications in ANSI X3.28

ANSI X3.28 "=" Command Example

ANSI X3.28 "?" Command Example

Statistical Process Control - SPC

The Difference Between Control and
Specification Limits

Chart and SPC Printout

NAKs and Error Codes

User Responsibility

Figures

Item

RS-422 Interface Wiring

RS-423 Interface Wiring

EIA-485 Interface Wiring

RS-422/RS-423 Switch Selection

General Message Syntax Example

XON/XOFF "=" Command Example

XON/XOFF "?" Command Example

ANSI X3.28 "=" Command Example

ANSI X3.28 "?" Command Example

Data Logging Interface Wiring

Table Printout Example

Chart & SPC Printout Example

Tables

Item

Setup Menu Prompts and Descriptions

ASCII Character Set

ASCII Control Characters (Partial Set)

Address to ASCII Conversion

"?" Command Data and Responses,
Partial Set

"=" Command and "?" Command Data

Printer Troubleshooting

Contents