CIE-H14A User Manual Ver. 1.4
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5.1.2
Modbus/TCP Slave Mode
According to the standard Modbus/TCP, users can use a Modbus/TCP manager to control
and monitor their I/O devices. You can set CIE-H14A to the [Slave] item to [Slave] mode.
The [Passive] connection is recommended in this mode and the [Peer Port] should be 502.
Modbus/TCP Mode
Slave
TCP Connection
Passive
TCP Port
502
Table 5-2 values for standard Modbus/TCP
Configure the proper values of [Unit ID], [Input Port Base Address], and [Output Port Base
Address].
5.1.3
Modbus/TCP Master Mode
In this mode, CIE-H14A operates as a Modbus/TCP master. As a master CIE-H14A
transmits its input information to the salve and outputs the slave’s input value to its output
port after reading the value periodically. At this stage, CIE-H14A controls the output ports
with not only bit unit (individually) but also word unit (at once)
⚫
FC 16(Multiple ports)
CIE-H14A controls the output ports and monitors the input ports of slaves with
WORD unit by FC16 (write multiple register) and FC03 (read holding registers)
⚫
FC 05(Single port)
CIE-H14A controls the output ports and monitors the input ports of slaves with BIT
unit by FC05 (write single coil) and FC02 (read discrete inputs).
