Winco DGC-2020 - Manual (Page 60)

4-10 DGC-2020 BESTCOMSPlus Software 9400200990 Rev B
the settings-access and operator-access passwords - not the OEM-access password. Figure 4-11
illustrates Device Security Setup screen with all three of the access levels shown.
A password is changed by clicking on the access level A , entering the new password B , and then clicking
on the Save Password button C .
Figure 4-11. BESTCOMSPlus Device Security Setup
A
Access Level/Password: Read-only value obtained when BESTCOMSPlus is communicating with the
DGC-2020.
B
Password: Accepts an alphanumeric character string of up to 16 characters.
C
Save Password: Clicking this button will save the password changes in BESTCOMSPlus memory.
COMMUNICATIONS
DGC-2020 communication settings include setup parameters for CANBus, modem, and RS-485
communication.
CANBus
The DGC-2020 CANBus interface provides high-speed communication between the DGC-2020 and the
engine control unit (ECU) on an electronically controlled engine. When ECU support is enabled
A
, the
DGC-2020 will ignore the analog coolant temperature, oil pressure, and engine speed inputs and rely
upon the ECU for these parameters. The DGC-2020 will also stop calculating engine run time and begin
using the run time recorded by the ECU.
When enabled
B
, the DGC-2020 will receive and retain unsolicited diagnostic trouble codes (DTCs) from
an ECU with DTC capabilities.
A DGC-2020 operating on a CAN network is identified by a unique address number
C
.
The DGC-2020 can be configured for Standard, Volvo Penta
∗, or MTU MDEC D
. Configuring the DGC-
2020 for Volvo Penta necessitates the configuration of two additional settings: Speed Select and
Accelerator Position. The Speed Select setting
E configures the Volvo Penta ECU to operate the engine at
the primary or secondary base speed. If the engine is configured by Volvo for 60 Hz applications, the
primary base speed is 1,800 rpm and the secondary base speed is 1,500 rpm. If the engine is configured
by Volvo for 50 Hz applications, the primary base speed is 1,500 rpm and the secondary base speed is
1,800 rpm. The Accelerator Position setting
F
is expressed as a percentage and tells the Volvo Penta ECU
where to set the engine speed (trim) relative to the base speed. The range of the setting is the base
speed
±120 rpm. A setting of 0% will cause the engine to run at 120 rpm below the base speed, a setting
of 50% will cause the engine to run at the base speed, and a setting of 100% will cause the engine to run
at 120 rpm above the base speed. The Accelerator Position setting is linear with a gain of 2.4
rpm/percentage. This setting is not saved in nonvolatile memory and defaults back to 50% after DGC-
2020 operating power is cycled. If the engine is configured by MTU MDEC necessitates the configuration
of three additional settings: Select MDEC module type, MDEC speed demand switch, and MDEC engine
RPM request. The Select MDEC module type setting
G
selects one of four MDEC ECU types: Module 201,
Module 302, Module 303, or Module 304. The MDEC speed demand switch setting
H
selects one of six
speed demand sources for the MDEC ECU: Analog Can, Up Down ECU, Up Down Can, Analog ECU,