19.5 Message Formats
19.5.3 Formats 1, 2 (GOT-A900 series microcomputer connection)
19 - 29
17
CONNECTION TO
ALLEN-BRADLEY PLC
18
CONNECTION TO
SIEMENS PLC
19
MICROCOMPUTER
CONNECTION
20
CONNECTION TO OMRON
TEMPERATURE
CONTROLLER
21
CONNECTION TO
YAMATAKE TEMPERATURE
CONTROLLER
22
CONNECTION TO RKC
TEMPERATURE
CONTROLLER
23
CONNECTION TO
FREQROL SERIES
INVERTER
24
SERVO AMPLIFIER
CONNECTION
2 Details of data items in message format
Data code during communication
Communication is performed in ASCII code. (excluding interrupt output)
(1) Control codes
(2) Command
Specifies the contents to access from the host to GOT.
The command is converted to a 2-digit ASCII code (Hex) and transmitted from the upper digit.
For details of commands that can be used, refer to the following.
Section 19.5.2 List of commands
(3) Address
Specifies the head No. of the device data to be read/written.
The address notated in decimal is converted to a 4-digit ASCII code (Hex) and transmitted from the
upper digit.
For details of the device ranges that can be accessed, refer to the following.
Section 19.4 Device Data Area
(4) Number of points
Specifies the number of device data to be read/written. (Setting range: 1 to 64)
The number of points notated in decimal is converted to a 2-digit ASCII code (Hex) and transmitted
from the upper digit.
(5) Year, month, day, hour, minute, second and day of the week data
Specifies year, month, day, hour, minute, second, and day of the week to be read/set to the GOT
clock data.
Data notated in decimal is converted to a 2-digit ASCII code (Hex) and transmitted from the upper
digit.
(5)Read clock data (TR) command
(6)Set clock data (TS) command
Symbol ASCII code Description
STX 02H Start of Text (start marker of message frame)
ETX 03H End of Text (end marker of message frame)
EOT 04H End of Transmission
ENQ 05H Enquiry (start of enquiry)
NAK 15H Negative ACK (error response)
ACK 06H Acknowledge (write completion response)
LF 0AH Line Feed
CL 0CH Clear
CR 0DH Carriage Return
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