14
C h a p t e r 3
Serial Connectivity
External RS-232
The RS-232 connection is provided for an external radio or similar device. The connection is compatible with Modbus
protocol as a slave port. See chapter 8 for additional information. Additional configuration is required for operation. See
section 2 for installation instructions and section 6 for information on how to configure specific devices.
• Supports flow control
• Not isolated, but protected from voltage transients
• Supports baud rates 1200-115200
Isolated RS-485
The RS-485 connection is provided to connect an RS-485 device. The connection is compatible with Modbus protocol as a
master port. See chapter 8 for additional information. Additional configuration is required for operation. See section 2 for
installation instructions and section 6 for information on how to configure specific devices.
• 2.5kVrms isolated RS485 bus that can be used to communicate with standard RS485 sensors as well as other DFS
telemetry equipment
• Protected from voltage transients
• Half duplex
• Supports baud rates 1200-115200
P4-2
RS485_GND
RS-485 serial ground reference
P4-3
RS485_B
RS-485 serial interface B
P4-4
RS485_A
RS-485 serial interface A
P4-5
SHIELD
Internally connected to chassis ground; Cable
shield for RS-485 or RS-232
P4-6
EX_GND_RAD
RS-232 signal ground
P4-7
RTS_RAD
RS-232 request to send
P4-8
EX_TXD_RAD
RS-232 transmit data to external device
P4-9
EX_RXD_RAD
RS-232 recieve data from external device
P4-10
CTS_RAD
RS-232 clear to send
Phase Voltage Monitoring
The TCU800 has an internal system to monitor phase voltages and provide fault detection for several faults. The TCU800’s
internal phase monitoring can also be bypassed and an external phase monitor can be used.
Internal
The TCU800 has an internal phase monitoring chip capable of monitoring several types of phase voltage configurations
and supplying failure conditions dependent upon those configurations.
Serial connectivity is provided on two interfaces to the TCU800: external RS-232 (slave) and isolated RS-485
(master).
Содержание TCU800
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Страница 49: ...39 S e t u p Externally Powered Non submersible Transducer TCU Powered Non submersible Transducer ...
Страница 56: ...46 C h a p t e r 5 Quick View Analog View Pump Statistics ...
Страница 57: ...47 U s e r I n t e r f a c e Alarms Settings Screen 1 Settings Screen 2 ...
Страница 58: ...48 C h a p t e r 5 Advanced Settings About ...
Страница 77: ...67 O p e r a t i n g P r o c e d u r e s TCU Installed in Existing Control Panel ...
Страница 87: ...77 M o d b u s S u p p o r t Figure 1 Figure 2 Figure 3 ...
Страница 92: ...82 D a t a F l o w S y s t e m s I n c Appendix ...
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Страница 162: ...Data Flow Systems Inc 605 N John Rodes Blvd Melbourne Florida 32934 321 259 5009 www dataflowsys com ...