M.T.H. HO S 3/6 Steam Engine
27
Advanced DCC Operation:
This section of the manual provides more in-depth detail on how to set up and
configure your MTH PS3.0-equipped engine using the NMRA-standard CV's as
well as the manufacturer-specific CV's. It also explains some of the other F
Functions not covered in the Basic DCC Operation section. Please refer to the CV
Data Table on
page 28.
Configuration Variables (CV)
Configuration Variables used on MTH PS3.0-equppied engines.
Cv1
Cv2
Cv3
Cv4
Cv5
Cv8
Cv17
Cv18
Cv19
Cv21
Cv22
Cv23
Cv24
Cv25
Cv29
Cv52
Cv53
Cv54
Cv55
Cv56
Cv63
Cv64
Cv66
Cv67-
Cv94
Cv95
Cv105
Cv106
Cv115-
CV170
Short Address: 1-127 are the valid addresses
Start Voltage (CV52, bit0 must =1. This will enable PWM Mode)
Acceleration Rate (CV52, bit0 must =1. This will enable PWM Mode)
Deceleration Rate ((CV52, bit0 must =1. This will enable PWM Mode)
Max Voltage (CV52, bit0 must =1. This will enable PWM Mode)
MFG ID. MTH =27. Also used for various resets
High Byte of Extended Address
Low Byte of Extended Address
Consist Address (bit 7=1 on an engine will tell the engine it's reversed in a
consist)
Defines active Function F1-F8 for the active consist
Defines active functions for FL and F9-F12 for the active consist (bit 0=1 will
tell an engine that you want it's FL control to operate under the consist address
– bit1-0/bit2=1 will configure the FL control for a reversed engine in a consist)
Consist Acceleration Rate
Consist Deceleration Adjustment
Speed Table Select
Decoder Configuration
MTH PWM Mode Configuration
MTH Acceleration (1/8*sMPH/s). For example – a Value of 8 written would
give you 1sMPH/s acceleration
MTH Deceleration Rate (1/8*sMPH/s)
Factory Reset Alternate method: Send a value of 55 to CV55 on address 55 and
the model will go back to Factory Default
Motorola Operating Mode (Applies to 3E+ models)
MTH Consist Acceleration Rate (1/8*sMPH/s)
MTH Consist Deceleration Rate (1/8*sMPH/s)
Forward Trim (CV52, bit0 must =1. This will enable PWM Mode)
Speed Table Selection (CV29 bit 4 must be set to 1 then CV25 must be set
to 0 or 1)
Reverse trim (CV52, bit0 must =1. This will enable PWM Mode)
User ID #1 – General Purpose use for customer
User ID #2 – General Purpose use for customer
MTH Function Assignments – See table of supported CV's and manual section
on how to re-arrange them for further information