Digital outputs
Outputs
The outputs are controlled via object 60FEh. Here, output 1 corresponds to bit 16 in object 60FEh, output 2 corresponds to bit 17, etc., as with the inputs. The outputs with special functions are again entered in the firmware in the lower bits 0 to 15. The only bit assigned at the present time is bit 0, which controls the motor brake.
Wiring
The outputs are implemented as "open drain". Hence, an external voltage supply is always necessary.
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Example |
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The digital output signal should continue to be used. For this purpose, a circuit as shown in the following figure is to be realized.
With a supply voltage of +24 V, a resistance value Rexternal of 10 kΩ is recommended. |
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Example |
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A simple load is to be used with the digital output.
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Object entries
Additional OD entries are available for manipulating the value of the outputs (see the following example for further information). As with the inputs, only the bit at the corresponding location acts on the respective output:
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3250h:01h: No function.
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3250h:02h: This is used to switch the logic from normally open to normally closed. Configured as normally open, the output outputs a logical high level if the bit is "1". With the normally closed configuration, a logical low level is output accordingly for a "1" in object 60FEh.
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3250h:03h: If a bit is set here, the output is controlled manually. The value for the output is then in object 3250h:4h; this is also possible for the brake output.
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3250h:04h: The bits in this object specify the output value that is to be applied at the output if manual control of the output is activated by means of object 3250h:03h.
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3250h:05h: The bit combination applied to the outputs is stored in this subindex.
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3250h:08h: For activating the Output Routing.
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3250h:09h: For switching control of the Power LED on/off. If bit 0 is set to "1", the green LED is activated (flashes in normal operation). If bit 1 is set to "1", the red LED is activated (flashes in case of an error). If the bit is set to "0", the respective LED remains off.
Computation of the outputs
Example for calculating the bits of the outputs:
Output Routing
Principle
The "Output Routing Mode" assigns an output a signal source; a control bit in object 60FEh:01h switches the signal on or off.
The source is selected with 3252h:01 to n in the "high byte" (bit 15 to bit 8). The assignment of a control bit from object 60FEh:01h is performed in the "low byte" (bit 7 to bit 0) of 3252h:01h to n (see following figure).
Activation
Routing
The subindex of object 3252h determines which signal source is routed to which output. The output assignments are listed in the following:
| Subindex 3252h | Output Pin |
|---|---|
| 01h | Configuration of the PWM output (software PWM) |
| 02h | Configuration of output 1 |
| 03h | Configuration of output 2 (if available) |
| … | … |
| 0nh | Configuration of output n (if available) |
Subindices 3252h:01h to 0nh are 16 bits wide, whereby the high byte selects the signal source (e. g., the PWM generator) and the low byte determines the control bit in object 60FEh:01.
Bit 7 of 3252h:01h to 0nh inverts the controller from object 60FEh:01. Normally, value "1" in object 60FEh:01h switches on the signal; if bit 7 is set, the value "0" switches on the signal.
| Number in 3252:01 to 0n | |
|---|---|
| 00XXh | Output is always "1" |
| 01XXh | Output is always "0" |
| 02XXh | Encoder signal (6063h) with frequency divider 1 |
| 03XXh | Encoder signal (6063h) with frequency divider 2 |
| 04XXh | Encoder signal (6063h) with frequency divider 4 |
| 05XXh | Encoder signal (6063h) with frequency divider 8 |
| 06XXh | Encoder signal (6063h) with frequency divider 16 |
| 07XXh | Encoder signal (6063h) with frequency divider 32 |
| 08XXh | Encoder signal (6063h) with frequency divider 64 |
| 09XXh | Position Actual Value (6064h) with frequency divider 1 |
| 0AXXh | Position Actual Value (6064h) with frequency divider 2 |
| 0BXXh | Position Actual Value (6064h) with frequency divider 4 |
| 0CXXh | Position Actual Value (6064h) with frequency divider 8 |
| 0DXXh | Position Actual Value (6064h) with frequency divider 16 |
| 0EXXh | Position Actual Value (6064h) with frequency divider 32 |
| 0FXXh | Position Actual Value (6064h) with frequency divider 64 |
| 10XXh | PWM signal that is configured with object 2038h:05h and 06h |
| 11XXh | Inverted PWM signal that is configured with object 2038h:05h and 06h |
On any change of the "encoder signal" (6063h) or the current position (6064h in user-defined units) by an increment, a pulse is output at the digital input (for frequency divider 1). Take this into account when selecting the frequency divider and the unit, especially when using sensors with low resolution (such as Hall sensors).
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Example |
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The encoder signal (6063h) is to be applied to output 1 with a frequency divider 4. The output is to be controlled with bit 5 of object 60FE:01. The output is switched on by setting bit 5 in object 60FE:01. |
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Example |
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The brake PWM signal is to be applied to output 2. Because the automatic brake control uses bit 0 of 60FE:01h, this should be used as control bit. |
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