Design and Implementation of HC900 Control System - Allowable Function Blocks for Process and Safety Functions
40 HC900 Process & Safety Controller Safety Manual Revision 1.9
01/14
XYR 6000
Wireless
Gateway
This block allows the HC900 controller to act as a
master device and communicate with an XYR6000
wireless gateway via the Ethernet port of the
controller. Configuration in HC900 master requires
one block per gateway, up to 32 gateways or 1024
parameters maximum. Only one block may be
assigned to each XYR6000 gateway slave device.
Even if it does not read or write parameters, it
provides a means of connecting XYR6000 wireless
transmitter blocks to it by way of ADDR output pin.
The block outputs provide digital indication of
communication integrity. For transmitter parameters
that are readable, there is separate 6XYRT block
which is connected to 6XYRWG via the ADDR output
pin at the bottom of this block. If more parameters of
any of the transmitters are to be read, then TCPR
block can be used with 6XYRWG block similar to
TCPS and TCPR combination. All outputs of the
block can be connected or tagged in the same
manner as any other function block output. If
XYR6000 gateway slave device does not respond to
a request, the last output value will be maintained.
X
XYR 6000
Transmitter
Use this block to read the process variables and
device status of any XYR6000 transmitter. To access
XYR6000 parameters, connect this block’s ADDR
input to the ADDR output of the XYR6000 Gateway
(6XYRWG) block. Five parameters—PV1, PV2, PV3,
PV4 and DEV_STAT—are read from the XYR6000
transmitter. DEV_STAT value contains several
statuses of the transmitter, and each status from
DEV_STAT is assigned its own output pin of this
block. If a 6XYRWG gateway does not respond to a
request from the HC900, the last read values will be
maintained on the 6XYRT outputs.
X
HVAC Blocks
Relative Humidity
Calculates RH as a function of wet bulb temperature,
dry bulb temperature and atmospheric pressure. 0 -
100% RH is output as a floating point number
between 0 and 100.
X
X
Humidity and
Enthalpy
This block calculates the Absolute Humidity and
Enthalpy based on the input Air temperature (X1), Air
relative Humidity (X2) and Barometric Pressure (P3).
This block does not have any Configurable
parameters. Output pin ERR turns ON when any of
the inputs (X1, X2, P3) are out of range or if either of
output values are out of range. In case of ERR ON,
outputs Y1 and Y2 are set to 0.0.
X
X
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