Editing SimpleMotion V2 port
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[[File:Ethernet_RJ45_connector_p1160054.jpg|thumb|RJ45 cable compatible with Ethernet and SimpleMotion V2]] | [[File:Ethernet_RJ45_connector_p1160054.jpg|thumb|RJ45 cable compatible with Ethernet and SimpleMotion V2]] | ||
[[SimpleMotion V2]] communication link and [[Argon (servo drive)|Argon]] drives use [http://en.wikipedia.org/wiki/Modular_connector#8P8C RJ45] connectors and cables as physical connection standard. | [[SimpleMotion V2]] communication link and [[Argon (servo drive)|Argon]] drives use [http://en.wikipedia.org/wiki/Modular_connector#8P8C RJ45] connectors and cables as physical connection standard. | ||
RJ45 is well known from Ethernet connectors and same cables may be used with SimpleMotion wiring. | RJ45 is well known from Ethernet connectors and same cables may be used with SimpleMotion wiring. | ||
− | == | + | ==Electrical properties== |
SimpleMotion V2 uses [[Wikipedia:RS485|RS485]] electrical serial communication standard for all data transfer. Some main benefits of using RS485 are: | SimpleMotion V2 uses [[Wikipedia:RS485|RS485]] electrical serial communication standard for all data transfer. Some main benefits of using RS485 are: | ||
+ | * Low wire count, only 2 signal wires + ground needed | ||
+ | * Bidirectional data transfer (receive & transmit) in one wire pair | ||
* Multidrop buses possible (up to 32 devices in single serial link) | * Multidrop buses possible (up to 32 devices in single serial link) | ||
* High reliability due to differential signaling | * High reliability due to differential signaling | ||
* High data rates and long cable lengths possible | * High data rates and long cable lengths possible | ||
* Easy to interface even from smallest microcontrollers with [[Wikipedia:Universal_asynchronous_receiver/transmitter|UART]] | * Easy to interface even from smallest microcontrollers with [[Wikipedia:Universal_asynchronous_receiver/transmitter|UART]] | ||
− | + | As default SimpleMotion V2 uses 460800 BPS bitrate. | |
− | + | ==Use as E-stop input== | |
− | + | [[File:multidrop_estop.png|thumb|SM V2 multidrop bus with E-stop functionality]]In Argon drive, the same connector acts also as emergencecy stop or [[Safe torque off]] input. User may connect a e-stop button directly at the end of device chain to gain reliable stopping mechanism for all linked devices. | |
− | As default SimpleMotion V2 uses 460800 BPS bitrate | + | ==Connector pinout== |
− | + | [[File:RJ-45_TIA-568A_Left.png|RJ45 cable pinout|thumb]] | |
− | + | {| class="wikitable" | |
− | == | + | |- |
− | + | ! Pin # !! Signal name !! Description | |
− | + | |- | |
− | + | | 1 || CANL (reserved) || CAN bus possibility for future use | |
− | + | |- | |
− | + | | 2 || CANH (reserved)|| CAN bus possibility for future use | |
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− | + | | 3 || RS485_A || RS485 signal A | |
− | + | |- | |
− | + | | 4 || Reserved || Do not connect | |
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− | + | | 5 || E_STOP || Connect normally closed E-stop button switch between pins 5 and 8 | |
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− | + | | 6 || RS485_B || RS485 signal B | |
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− | + | | 7 || Reserved || Do not connect | |
− | + | |- | |
− | + | | 8 || GND || Ground reference for RS485 and E_STOP | |
− | + | |} | |
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