GW-7553-B / GW-7553-M PROFIBUS/Modbus TCP Gateway User Manual
(Version 1.35, May/2017)
PAGE: 76
Figure 70 Initiate request Parameters
Table 22 Send data Parameters
Parameters
Value
Parameters
Value
PROFIBUS station address of GW-7553
0x01
S-Type
0x00
Send Timeout (Lo)
0xF4
S-Len
0x02
Send Timeout (Hi)
0x01
D-Type
0x00
Features Supported 1
0x01
D-Len
0x02
Features Supported 2
0x00
S_Addr API
0x00
Profile Features Supported 1
0x00
S_Addr SCL
0x00
Profile Features Supported 2
0x00
D_Addr API
0x00
Profile Ident Number (Lo)
0x00
S_Addr SCL
0x00
Profile Ident Number (Hi)
0x00
--Sending Read request telegram to read data of the GW-7553
If configure CIF50-PB as a class 1 master,
《
Message Header->B
》
is 0x11
If configure CIF50-PB as a class 2 master,
《
Message Header->B
》
is 0x21
Please click
Online->Message Monitor
, then fill in parameters relative to Read
request telegram, as shown in
Figure 71
、
Figure 72
and
Table 23
Telegram