CIE-M10A User Manual Ver. 1.0
- 30 -
5.1.4 TCP Connection Modes
In the standard of Modbus TCP, the master program makes a connection to the slave
using port number 502. However, sometimes Modbus/TCP devices try connecting to the
master actively. For this case, CIE-M10A supports the active connection mode.
passive
connection
- Standard Modbus/TCP.
- Remote host connects to CIE-M10A.
- Port number that is used for communication must be designated.
-
Depending on the setting of multiple connections, up to 8 hosts
can be connected
simultaneously.
active
connection
- CIE-M10A tries to establish a connection to the remote host.
- The IP address (or host name) and port number of the remote
host are required.
Table 5-3 the passive / active connection
5.1.5 Initial State
The initial state of CIE-M10A
’
s output ports can be configured. The output ports are set
to ON or OFF according to the value of [Initial State] at the boot time.
5.1.6 Write Pulse
By using the function code 105(0x69), you can give the signal of pulse type to the output
ports. This means the output signal is kept during the specific time configured by users.
Refer to the document [Modbus/TCP protocol] on our website for details.
5.2
Serialized Modbus/TCP
Since 1.3A firmware, serialized Modbus/TCP mode had been added on the firmware. In
this mode, CIE-M10A sends and receives Modbus/TCP data via the serial port. By using this
mode, you can monitor and control the I/O ports of CIE-M10A through the RS232 port.
Note that you can
’
t control the output ports of CIE-M10A with HTTP or Modbus/TCP in
this mode. Also, the TCP and UDP data communication for serial devices cannot be
activated.
