Varec 8300 series, Инструкция по установке и эксплуатации, Страница: 41 / 150

8303 Software Description
Varec, Inc. 31
a bridge. Other options include assigning one COM point to communicate with a Slave device
while communicating to a Host system on the other.
4.4.3 Floating Point Register (FPREG)
The Floating Register point provides four bytes of storage in IEEE floating point
format. It is often used for inter-point communications where no other means is
provided.
Parameters
The database parameters used by the FPREG point are listed and described below:
4.4.4 Emulator (EMU)
The Emulator point allows the to emulate a Whessoe-Varec Model 6820 Tank
Scanning Unit (TSU). This point provides access for level, temperature data, and
gauge status information from any type of tank gauge interface supported by the
8203 Dual RS-485 Communications Interface Module.
Parameters
The database parameters used by the EMU point are listed and described below:
Configuration Parameters Function
Tag Point tag
Dynamic Parameters Function
Value1 through Value50 Real (4 bytes) value
PntStatus Integer HEX value indicating status of point. Values are:
0x0001: Gauge Not Responding. The first time the gauge does not
respond, the 0x8000 bit is set. On the second try, the 0x01 bit is set.
0x0002: Data Invalid (General Data Error)
0x0004: Bad Level
0x0008: Temp OverRange
0x0010: Temp UnderRange
0x0020: A/D Error
0x0040: Filtering Level
0x0800: Filtering Temp
Elapse Time of the last Change of State.
PntCheckSum CRC-16 Checksum for point’s static Configuration Parameters.
Configuration Parameters Function
Tag The point description can contain 30 bytes of data and can include any
printable ASCII character. Descriptions can be used as information relevant
to any aspect of the point, such as its use, location, operating information,
etc. The default description is set to “EMU.00”.