Arcteq Generator Commander, Instruction Manual

Page: 476 / 561

Table. 7.1.3 - 389. Modbus/TCP settings.
Parameter Range Description
Enable Modbus/
TCP
0: Disabled
1: Enabled
Enables and disables the Modbus/TCP on the Ethernet port.
IP port 0…65 535
Defines the IP port used by Modbus/TCP. The standard port (and the default
setting) is 502.
Ethernet port
0: All
1: COM A
2: Double Ethernet card
Defines which ethernet ports are available for Modbus connection.
Event read mode
0: Get oldest available
1: Continue previous
connection
2: New events only
0: Get oldest event possible (Default)
1: Continue with the event idx from previous connection
2: Get only new events from connection time and forward.
Table. 7.1.3 - 390. Modbus/RTU settings.
Parameter Range Description
Slave address 1…247 Defines the Modbus/RTU slave address for the unit.
Reading events
Modbus protocol does not support time-stamped events by standard definition. This means that every
vendor must come up with their own definition how to transfer events from the device to the client. In
AQ-200 series devices events can be read from HR17...HR22 holding registers. HR17 contains the
event-code, HR18...20 contains the time-stamp in UTC, HR21 contains a sequential index and HR22 is
reserved for future expansion. See the Modbus Map for more information. The event-codes and their
meaning can be found from Event list ( Tools
→
Events ang Logs
→
Event list in setting tool). The event-
code in HR17 is 0 if no new events can be found in the device event-buffer. Every time HR17 is read
from client the event in event-buffer is consumed and on following read operation the next un-read
event information can be found from event registers. HR11…HR16 registers contains a back-up of last
read event. This is because some users want to double-check that no events were lost
7.1.4 Modbus I/O
The Modbus I/O protocol can be selected to communicate on the available serial ports. The Modbus I/
O is actually a Modbus/RTU master implementation that is dedicated to communicating with serial
Modbus/RTU slaves such as RTD input modules. Up to three (3) Modbus/RTU slaves can be
connected to the same bus polled by the Modbus I/O implementation. These are named I/O Module A,
I/O Module B and I/O Module C. Each of the modules can be configured using parameters in the
following two tables.
Table. 7.1.4 - 391. Module settings.
Name Range Description
I/O module X
address
0…247
Defines the Modbus unit address for the selected I/O Module (A, B, or C). If this setting
is set to "0", the selected module is not in use.
Module x
type
0: ADAM-4018+
1: ADAM-4015
Selects the module type.
Channels in
use
Channel
0…Channel 7 (or
None)
Selects the number of channels to be used by the module.
Genera Generattor Commander or Commander
Instruction manual
Version: 2.07
474 © Arcteq Relays Ltd
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