BC-3GM User Manual
Page 38 of 39
commands FC16 will be necessary to complete this since Modbus itself
allows the data access to up to 125 registers for each command.
7.2.2.
SMS message parameter
The Modbus TCP server listens to 502 port and 2000 port. It can
support the following Modbus functions.
FC6= Preset (Write) Single Register (4X)
FC16= Preset(Write) Multiple Register(4X)
[Table7.1: Modbus TCP SMS message parameters]
Please be noted that it is very critical to predefine Chinese SMS messages ahead to
enable sending Chinese SMS messages. In this brochure, Page28, it describes how
to setup up to 30 Chinese SMS messages and each text message contains up to 80
characters. The predefined content will be the final received message in cellphone.
Output_Str parameter sent by Modbus command is actually the sequence number
SMS Message Parameters
Name
Data Type Access
Modbus
Register
Description
Out_Str_Size
INT
Read/Write
40011
Number of bytes in the Output
String
Num_To Send
INT
Read/Write
40012
Number of phone numbers that
the SMS will be sent to
Output_Str
SINT[160] Read/Write
40013-
40092
Message to be transmitted (Max
160 Bytes)
Ph_Number_1
SINT[24]
Read/Write
40093-
40104
full number including prefixes
country code etc..
Ph_Number_2
SINT[24]
Read/Write
40105-
40116
full number including prefixes
country code etc..
Ph_Number_3
SINT[24]
Read/Write
40117-
40128
full number including prefixes
country code etc..
Ph_Number_4
SINT[24]
Read/Write
40129-
40140
full number including prefixes
country code etc..
Ph_Number_5
SINT[24]
Read/Write
40141-
40152
full number including prefixes
country code etc..
