Pub. 42004-550A
Elemec3 Console Manual—Version 3.0 Page 55 of 114
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Modbus TCP Server
Double click the E3 MODBUS SERVER device icon in the MODBUS SUMMARY screen to configure the
Modbus TCP server parameters. Modbus TCP modules have two tabs on their property screens; INPUTS
and OUTPUTS. Inputs allow Modbus clients to trigger events in the E3 system. Outputs allow Modbus
clients to read ON/OFF event status or other conditions within the E3 system.
Description—device description in the E3 system.
Port—TCP port number for the Modbus protocol. Default: 1502
Inputs Tab
Figure 58. E3 Modbus TCP Server Properties—Inputs Tab
Coil Address—Modbus coil address assigned to the input. Valid coil addresses are 00000–65535.
Description—a unique description of the input function (i.e. general alarm, process shut-down, etc.)
Mode:
• Disabled—The system ignores the input
• Maintained—The event is active while the input (coil) is on and immediately cancels when turned
off by a Modbus client.
• Momentary—The event is active when the discrete input (coil) is ON and remains active until an
event CANCEL command is issued to the E3 controller.
Trigger—event to trigger when the input (coil) is ON.
Auto Inhibit—the auto-inhibit key switch ignores triggered events when the input (coil) is ON.
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