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590SP Digital Product Manual
App. H - 7
Appendix H RS422 Communications (Ports P1 & P2)
H
Control Characters
Control characters are ASCII binary codes which define actions rather than information. Below lists the six ASCII
codes used.
ASCII-HEX Parameter Code
Description
02
(STX)
Start of text
03
(ETX)
End of text
04
(EOT)
End of transmission
05
(ENQ)
Inquiry
06
(ACK)
Positive acknowledge
15
(NAK)
Negative acknowledge
Instrument Address
The 590SP or associated Eurotherm instrument has an address, the first digit being the “group” number (GID) in the
range 0 to 7, the second a “unit” number (UID) in the range 0 to F. This yields 128 different addresses from 00 to FF.
Parameter Mnemonic
Each Eurotherm instrument has parameters defined within its program structure, which are specified by a two
character mnemonic. Instruments exchange information by using these mnemonics.
Examples are:
Mnemonic
Description
10
Analog input 1
0F
Instrument health word
09
Drive speed demand
Complete tables of the 590SP mnemonics are given in Serial Link Mnemonics and Parameter Number Allocation
sections.
Data
Data consists of three types:
i.
Numerical Data
The parameter refers to either a positive or negative number such as a level,
setpoint, gain, or result within the instrument.
ii. Boolean Data
A Boolean parameter, such as a switch, can be monitored or set as enabled or
disabled from the serial link. It is accessed as part of a status word as defined
below.
iii. Status Information
The parameter refers to a binary word. Each bit within the word is a significant
switch within the program structure.
Examples of numerical data are:
Mnemonic
Parameter Name
Description
23
Speed loop error
A number in the range ±100.00%
0B
Current demand
A number in the range ±200.00%
22
Digital tach
A number in the range ±6000 RPM
Examples of status information are:
Mnemonic
Parameter Name
Bit
Description
0F
Health word
1
Missing pulse alarm
9
Three-phase present
13
Current trip alarm
The Serial Link Mnemonics and Parameter Number Allocation sections contain complete information on the data
types and the status words.
Summary of Contents for 590SP
Page 2: ......
Page 16: ...1 4 590SP Digital Product Manual 1 Chapter 1 Introduction ...
Page 18: ...2 2 2 590SP Digital Product Manual Chapter 2 Identification ...
Page 31: ...Figure 3 3 Wiring Circuit Diagram for 590SP Digital Drive ...
Page 41: ...4 10 4 590SP Digital Product Manual Chapter 4 Start up and Adjustment DIGTIAL ...
Page 67: ...6 590SP Digital Product Manual Chapter 6 Service and Maintenance 6 6 ...
Page 89: ...B Appendix B Using the Man Machine Interface App B 4 590SP Digitial Product Manual ...
Page 125: ...Appendix C Setup Parameters 590 DRV Digital DC Drive Product Manual App C 36 C ...
Page 149: ...Appendix D I O Configuration System Menu App D 24 D 590SP Digital DC Drive Product Manual ...
Page 150: ...t t t t Figure D 20 590SP Digital Software Block Diagram ...
Page 160: ...590SP Digital Product Manual App E 10 E Appendix E MMI Parameter List ...
Page 168: ...Appendix G RS232 System Port P3 590SP Digital Product Manual App G 6 G ...
Page 194: ...Appendix H RS422 Communications Ports P1 P2 590SP Digital Product Manual App H 26 H ...
Page 220: ...App L 6 590SP Digital Product Manual L Appendix L 590SP DRV Option ...
Page 221: ...Figure L 5 Wiring Circuit Diagram for 590SP Digital DRV Drive ...
Page 259: ...590SP Digital Product Manual App M 38 Appendix M Special Blocks and Application Notes M ...