User Manual

TMCM-1070 TMCL

™

Firmware Manual • Firmware Version V1.01 | Document Revision V1.1 • 2017-Mar-02

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6 Module Speciﬁc Conﬁguration

This section explains how to use the two digital inputs of the TMCM-1070. It also describes the default

conﬁguration for microstep resolution and interpolation as well as for current setting.

6.1 Digital Inputs

The TMCM-1070 includes two digital inputs: ENABLE and CHOP. The ENABLE input is a low active input

which powers the motor when the ENABLE is not set.

The CHOP input allows the user to choose between diﬀerent chopper modes. When CHOP is cleared, the

chopper mode is SpreadCycle. When CHOP is set, the active chopper is StealthChop. The change from

SpreadCycle to StealthChop is only allowed when the motor is powered and in still stand. The chopper

mode will remain SpreadCycle until both conditions are fulﬁlled.

NOTICE

Note that the voltage at the digital inputs can be reversed depending on the

reference voltage of the optocoupler. See the Hardware Manual of TMCM-1070

for more details.

NOTICE

In the TMC5130 Manual, available at www.trinamic.com, you can ﬁnd more infor-

mation about how to conﬁgure StealthChop and SpreadCycle.

6.2 Default Conﬁguration

By default, the TMCM-1070 uses the conﬁguration shown in Section 4 for each of the parameters. In

the following table we show several of the variables which can be also stored in the EEPROM permanent

storage.

Default Conﬁguration of TMCM-1070 Parameters

Name Command Default Value Meaning

Microstep Resolution SAP/GAP 140, 0 4 Resolution: 16 microsteps per full step.

Microstep Interpolation SAP/GAP 141, 0 1 Interpolation to 256 microsteps.

Maximum Current SAP/GAP 6, 0 24

Current when motor is running is 24/31.

Standby Current SAP/GAP 7, 0 3

Current when motor is not running is

3/31.

VSense SAP/GAP 179, 0 0 High sense resistor voltage.

Table 11: Default Conﬁguration of TMCM-1070 Parameters

In summary, with the default conﬁguration:

• The TMCM-1070 works with 16 microsteps per full step interpolated to 256 microsteps.

• The current when motor is running is 1 A RMS and 0.136 A RMS when not running.

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