ICP CON I-7550E, Руководство пользователя, Страница: 28 / 102

I-7550E PROFIBUS/Ethernet Converter User Manual
(Version 1.00, June/2014)
PAGE: 28
received data depending on these values.
When the I-7550E is in “Idle Mode” (Byte 0 =0), the value of Input data area
will be zero.
Table 13 Input data area of Read/Write Mode ((Byte 0 =1)
Byte Data type Description
System
setting
module
0 Byte
Operation mode
1 Word Read Message ID
3 Word
Total number of written message
5 Word
Numbers of message waiting to be
written
7 Byte
Connection ID
8 Byte
Reserved
9 Word
Reserved
11 Byte Total numbers of Message index
12 Byte The index of current message
13 Word Total length of message
15 Byte
The length of current message
16~19 Byte
Reserved
Input
module
20~239 Byte
Receive data from Ethernet
Device
Byte 0: Operation Mode
This Byte will show the current operation mode of the I-7550E.
Byte 1~2: Read Message ID
When the I-7550E receives data from Ethernet device, the I-7550E will
assign an ID for this data. It will let the user know now the next data is
available.
Byte 3~4: Total number of written message
This value is big-endian byte order. The I-7550E will count how many data
has been sent to Ethernet device. When this value is 65535, the next value
will be 1.
Byte 5~6: Numbers of message waiting to be written