1-6
Chapter 1: Module Overview
User’s Manual Pub. 0300272-03 Rev. B
Section 1.7
System
Overview
The module communicates to the controller via an Ethernet adapter. The module
receives 5 and 24 VDC power through the PointBus backplane bus interface.
1.7.1 Module Power-up
At power-up, the module performs a check of its internal circuits, memory, and
basic functions. If no faults are found during power-up diagnostics, the module
status LED is turned on. By default, the module powers up with both channels
disabled and powered down until valid configuration information is received.
After power-up checks are complete, the module waits for valid channel
configuration data. If an invalid configuration is detected, the module will
generate a PLC fault. Once a channel is properly configured and enabled, it
continuously converts the output data to a value within the range selected for that
channel.
NOTE
If the module loses its IO connection during operation (physically
disconnected from controller), the module will operate based on the
configuration setting for
Fault Action
. Once the connection is re-
established and a valid configuration is received, the outputs will run
normally.
When the module is set to
Inhibit
in the AOP, both outputs are held off
until the condition is cleared.
1.7.2 Module Operation
The 1734sc-OE2CIH has two, single-ended, 4-20 mA and 0-20 mA isolated
current output modules. HART capability is available only on the 4-20 mA
range. The module is fault protected to ±24 VDC. The module also contains a 16-
bit DAC. The 1734sc-OE2CIH has HART Primary Master capability. A
dedicated HART modem is used for each channel for maximum throughput.
When HART functionality is enabled on a channel, the module discovers and
establishes communication with HART revision 5 and greater devices. Once
communication has been established, the module automatically gathers HART
PV, SV, TV, and FV data, and monitors device status. The modules provide a
communication bridge via Common Industrial Protocol (CIP) messaging to
HART devices for Asset Management Software and Ladder Programs.
Summary of Contents for 1734
Page 1: ......
Page 6: ...vi Point IO 2 Channel Isolated Output Analog HART Module User s Manual Pub 0300272 03 Rev B ...
Page 10: ...1 4 Chapter 1 Module Overview User s Manual Pub 0300272 03 Rev B ...
Page 13: ...Chapter 1 Module Overview 1 7 User s Manual Pub 0300272 03 Rev B See the block diagram below ...
Page 14: ...1 8 Chapter 1 Module Overview User s Manual Pub 0300272 03 Rev B ...
Page 24: ...2 10 Chapter 2 Installation and Wiring User s Manual Pub 0300272 03 Rev B ...
Page 36: ...3 12 Chapter 3 Configuring the Module User s Manual Pub 0300272 03 Rev B ...
Page 68: ...4 32 Chapter 4 OE2CIH and HART User s Manual Pub 0300272 03 Rev B ...
Page 74: ...A 6 Appendix A Module Specifications User s Manual Pub 0300272 03 Rev B ...
Page 76: ...I 2 Index User s Manual Pub 0300272 03 Rev B ...
