Digital and Analog I/O 9300 Series User’s Guide
Page 120 Chapter 5 - Features and Applications
Digital and Analog I/O
Digital and analog I/O ports on ION meters let you bring a variety of data into a
common system, thereby simplifying data gathering. The 9300 Series offers
numerous digital and analog I/O combinations.
All series meters provide four digital (relay) output ports, one infrared data port,
and one configurable LED output. The digital outputs are used as status outputs
or for relay control. The infrared port can be used as a communications port, or it
can be configured as a digital output for energy pulsing applications. The LED (L1)
is used for energy pulsing. The 9330 and the 9350 meters also provide four digital
(status) inputs. These optically isolated digital inputs can monitor status, count
transducer pulses, breaker trips and pulses from any external "volts free" dry
contact.
NOTE
The LED (L1) is preconfigured for kWh pulsing, but it can be easily reconfigured to perform kVAh pulsing,
kVARh pulsing or any other digital output function.
There is also an analog I/O option - four analog inputs and four analog outputs -
that can be specified for any 9300 Series meter. These allow you to monitor a wide
range of conditions, such as device cycles (RPM), flow rates, fuel levels, oil
pressures and transformer temperatures. You can output energy pulses to an RTU
or perform equipment control operations.
An optional external relay board (the REB option) is available with four external
relays that connect to the onboard digital outputs. Several different types of digital
output devices are available for use with the external relay board; refer to
www.sea.siemens.com for the External I/O Output Device Part Summary.
Refer to the technical note Digital and Analog I/O for more information regarding
digital and analog inputs and outputs than is provided in this User’s Guide.

Specifying a Port In an ION Module

The Digital Output, Digital Input (9330 and 9350), Analog Output, Analog Input,
Pulser, and Calibration Pulser modules have Port setup registers that allow you to
specify which port handles the outgoing or incoming signals. To assign a port to
one of these modules, simply modify the Port setup register by picking a port from
the enumerated list. This can be done with both Designer and ION Setup.
Be aware that the enumerated list only displays those ports that are not yet
assigned to another module. For example, the meter’s default configuration has
port L1 assigned to Calibration Pulser module “kWh imp LED.” If you create a
new Calibration module and modify its Port setup register, port L1 does not
appear in the list of available ports. To make a port available, you must locate the
module controlling it and set the module’s Port setup register to NOT USED (or
delete the module entirely). The port now appears in the list of available ports.