ST100 Series Probus PA
Fluid Components International LLC 17
Using the ST100 PROFIBUS PA Service Transducer Block
Introduction to the Service block
The ST100 Service Block provides access to a number of instrument configuration parameters and troubleshooting information. The multi-point
configuration mode provides process information from each individual sensor and sensor electronics.
Configuration Parameters:
FLOW_TYPE: This parameter is a read/write parameter and is used to set and select one of three flow types;
velocity flow, or volumetric flow, or mass flow. To set the instrument to velocity flow, a value of
4 needs to be entered. To set the instrument to mass flow, a value of 3 needs to be entered. And
to set the instrument to volumetric flow, a value of 0 needs to be entered.
TOTALIZER_STATE: This parameter is used to turn the FCI internal TOTALIZER on or off. To turn the TOTALIZER on a
value of 1 needs to be entered. To turn the TOTALIZER off a value of 0 needs to be entered.
PLENUM_SIZE_VALUE1: This parameter and the other PLENUM_SIZE_VALUE2 are used to enter plenum size
information when the plenum is a duct. This parameter is used to enter the size of the width
of the duct.
PLENUM_SIZE_VALUE2: This parameter is used to enter the size of the height of the duct.
WRITE_PROTECT_MODE: This parameter is used to limit or give access to the parameters that can be written from the
instruments other configuration ports. The ST100 has 3 ports that can be used to set it up or
configure the instrument, a USB port, an Ethernet port and the digital communication protocol
like PROFIBUS PA. By loading a value of 1 into this parameter, it inhibits the other ports from
accessing the setup parameters at the same time that the parameters are being set through
PROFIBUS PA. To release control a value of 0 needs to loaded into this parameter.
FACTORY_RESTORE: This parameter is used to restore the current active flow group calibration parameters to the
values initially set by the factory.
Information Parameters:
DEVICE_CO: This is a read only parameter that presents the Customer Order number assigned to the
instrument.
DEVICE_SERIAL_NUM: This is a read only parameter and it presents the instrument’s serial number.
DEVICE_SFTWR_VER: This parameter is a read only parameter and it presents the instruments software version.
Troubleshooting Parameters:
SENSORS_BANK_1: This parameter allows viewing of the process parameters that the FE (Sensor level) before
averaging, allowing technical personnel in the control room the ability to identify the
contribution of each sensor head, and identify the problem sensor.
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