TOHO ELECTRONICS TTM-00BT - Manual (Page 19)

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7.9.3 Communications procedure
This product returns a "response message" in response to a "request message" from a high-level
computer. It therefore does not initiate a transmission.
上位コンピュータ
本器
要求メッセージ
要求メッセージ
要求メッセージ
要求メッセージ
上位コンピュータが
送信
本器が
送信
上位コンピュータが
送信
本器が
送信
０∼２５０ｍｓ １ｍｓ以上
応答遅延時間
「2.8 応答遅延時間の設定」参照
「3.7.1 送受信タイミング」参照
「3.7.2 要求間隔」参照
7.9.4 Message types
n Messages are roughly divided into the following types:
Read request message
Write request message
Store request message
Request message (transmitted
from a high-level computer)
Response message (transmitted
from this product)
Receipt acknowledgement and data
response
Write complete response
Reception error and error description
response
Store complete response
: Response when a normal "request message" is received
: When a received "request message" contains an error
"7.9.5 1)", "3.5.1"
"7.9.5 2)", "3.5.2"
"7.9.5 3)"
"7.9.6 1)"
"7.9.6 2)"
"7.9.6 3)"
"7.9.6 2)"
n All codes (except for BCC) from STX and data to ETX are expressed in ASCII codes.
n In assembling a program for a high-level computer, see "6. Table of identifiers" and "7.9.13.
Table of ASCII codes" at the end of the book.