
any WindowsTM computer running the TCC600® Communications Software or
SCADA communications software.
Using a PC, the operator has real
‑
time, remote access to all functions of the Digital
Tapchanger Control. The control can act as the monitoring point for all voltage, current,
and related power quantities. This simplifies operation while avoiding transducers and
multiple Remote Terminal Unit (RTU) analog inputs. The protocols implement
half
‑
duplex, two
‑
way communications. This allows all functions, which would otherwise
require the presence of an operator at the control, to be performed remotely.
Communication capabilities include:
•
Interrogation and modification of setpoints
•
Broadcast of commands, such as tapchange inhibit and voltage reduction (up to three
steps) to networked controls
•
Recognition of alarm conditions, such as voltage extremes and excessive load
•
Selective control of raise and lower tapchange operations
•
Re-configuration of the control, such as a change to the demand integration time
period or a selection of different alarm parameters
TCC600 provides the means to enable or disable installed RS-232 and Bluetooth®
modules. This capability is provided by a communication options utility under the
Communication menu. Prompts to enable communication hardware are also contained in
the individual port setup menus.
Direct Connections
TCC600 supports direct communication (MODBUS® protocol) with a ABB Digital
Tapchanger Control using the applicable connector (USB cable) for the PC, Fiber Optic
communication using ST standard, two-wire RS
‑
485 or RS-232.
Protocols
The standard protocols included in the TCC300 are DNP3.0 and MODBUS. IEC 61850
is available as an option. The USB port uses MODBUS for local communications. The
optional Ethernet Port supports DNP over TCP/IP and UDP; MODBUS over TCP/IP and
UDP protocol and IEC 61850 over TCP/IP protocols simultaneously. The user must select
the protocol that is to be used with the TCC300 Tapchanger Control's RS485/Fiber Optic
Port.
Detailed descriptions of the data points used for the standard protocols are available from
ABB upon request, and are available for download from our website, www.abb.com.
Communication Access Security and Timeout
When Communication Access Security and Timeout is enabled it applies only when
MODBUS has been selected regardless of the physical interface. If enabled the user Level
1VAC388793-MB A
Section 5
System setup
TCC300
277
User Manual
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