Contents
Main
Contents
Two Serial Hardware Interfaces and Two Software Protocols
Communications Wiring
How to Use Data Communications with the Watlow Series 945
Data Comm
4
How to Use Data Communications
Series 945 #
RS-422A
RS-422A Interface Pinouts 945A-XXXX-B000
Figure 1 - RS-422A Interface, Pin Designations.
RS-423A Interface Pinouts (RS-232C Compatible) 945A-XXXX-B000
RS-423A
EIA-485 Interface Pinouts 945A-XXXX-D000
EIA-485
Connecting the Control and the Computer
Configuration
How to Set the Hardware Protocol Switches
for 945A-XXXX-B000 Units Only
Network Connections
Parameters
Setup Menu - Communications Parameters
Setup
Setup Menu
Operation Menu
10
ASCII Char.
ASCII Control Characters (Partial Set)
ASCII Character Set
Syntax
Message Syntax
Data Rules
Series 945 General Message Syntax
Command List
ASCII
Example Format
XON/XOFF Protocol for RS-423A
XON/XOFF "="
XON/XOFF "=" Command Example
How To Start and Stop Communicating with the Series 945 and XON/XOFF
14
XON/XOFF "?"
XON/XOFF "?" Command Example
ANSI X3.28
Device Address
ANSI X3.28 Protocol for RS-422A and EIA-485
Starting Communications in ANSI X3.28 Protocol
16
ANSI X3.28 "="
ANSI X3.28 "=" Command Example
Stopping Communications in ANSI X3.28 Protocol
ANSI X3.28 "?"
ANSI X3.28 "?" Command Example
18
Commands
"?" Command
Table 5 - "?" Commands and Responses. These commands are READ ONLY.
Commands
Data.1 Data.2
"=" Command
20
Commands
Data.1 Data.2
l
Data Logging
Data Logging
Data Logging
SPC - Statistical Process Control
Table Printout
SPC
The Difference Between Control & Specification Limits
Chart & SPC
Figure 12 - Chart and SPC Printout Example
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(Any messages concerning tchanges in he system are printed here)
Error Codes
NAKs and Error Codes
User Responsibility
Index
G
H
I
