Differences

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--- mycnc:mycnc_et10 [2019/09/23 09:24] – ivan
+++ mycnc:mycnc_et10 [2020/01/10 10:05] – ivan
@@ Line 13: / Line 13: @@
 ET10 has 6 channel pulse/dir outputs, with the maximum pulse frequency of 3MHz.
-ET10 pulse/dir outputs conform to the RS422 standard and are compatible with most of servo and stepper drivers (line driver with paraphase signals positive and negative polarity). Internal schematic for pulse-dir is shown in the picture below:
+ET10 pulse/dir outputs conform to the RS485 standard and are compatible with most of servo and stepper drivers (line driver with paraphase signals positive and negative polarity). Internal schematic for pulse-dir is shown in the picture below:
 {{hardware:pulse-dir6.jpg?800}}
@@ Line 94: / Line 94: @@
 ==== ET10 Encoder inputs ====
-ET10 board has 6 Incremental encoder inputs. There are 4 complete ABC encoder inputs (A/B quadrature encoder signals and Z signal) and 2 reduced AB encoder inputs. ET10 encoder inputs conform to the RS422 standard and are compatible with most of the servo drivers and line driver incremental encoders. 34C86 chip is used in ET10 as a receiver for the encoder signals. Internal schematic for line driver encoder inputs is shown in the picture below.
+ET10 board has 6 Incremental encoder inputs. There are 4 complete ABC encoder inputs (A/B quadrature encoder signals and Z signal) and 2 reduced AB encoder inputs. ET10 encoder inputs conform to the RS485 standard and are compatible with most of the servo drivers and line driver incremental encoders. 34C86 chip is used in ET10 as a receiver for the encoder signals. Internal schematic for line driver encoder inputs is shown in the picture below.
 **INCREMENTAL ENCODER** inputs schematic (1 Encoder, ABC signals are shown)
@@ Line 147: / Line 147: @@
-==== RS422/RS485 Bus ====
+==== RS485 Bus ====
-MyCNC-Et10 control board has a RS422/RS485 bus connector. Modbus ASCII/RTU and Hypertherm Serial communication interfaces are implemented in myCNC-ET10 control board.
+MyCNC-Et10 control board has a RS485 bus connector. Modbus ASCII/RTU and Hypertherm Serial communication interfaces are implemented in myCNC-ET10 control board.
-RS422 connector pinout is shown below:
+RS485 connector pinout is shown below:
 {{hardware:et10:et10-uart-001.png}}
@@ Line 157: / Line 157: @@
+==== ET10 Single-Board Computer connection ====
+The single board computer (such as a TinkerBoard) should be connected to the myCNC-ET10 controller board in a way shown in the photo below:
+{{:mycnc:0pc-et10-001.jpg}}
+Note that the connection MUST be done to the 5V/GND ports of the XT30 connector block and not to the 24V ports of the XT29 block which is located right next to it. Incorrect connection of the power supply may cause damage to the computer.
 ==== Board dimension ====