{"id":1381,"date":"2025-04-10T11:38:01","date_gmt":"2025-04-10T11:38:01","guid":{"rendered":"https:\/\/webprojects.cloud\/wordpress\/splatco\/?post_type=spl_knowledgebase&#038;p=1381"},"modified":"2025-04-10T11:39:52","modified_gmt":"2025-04-10T11:39:52","slug":"hmi430-700-communication-ports","status":"publish","type":"spl_knowledgebase","link":"https:\/\/webprojects.cloud\/wordpress\/splatco\/knowledgebase\/product-documentation\/product-documentation-controllers\/hmi430-700-product-documentation\/hmi430-700-communication-ports\/","title":{"rendered":"HMI430\/700: Communication ports"},"content":{"rendered":"\n<p>There are 2 x TTL level serial ports and 1 x RS485 port on the HMI430\/700.&nbsp; The HMI700 also has a RS232 port that is shared with one of the TTL ports.<\/p>\n\n\n\n<p>The RS485 port may be used for normal serial communications (MODBUS or user defined communications) or switched to Xwire to allow distributed I\/O schemes.<\/p>\n\n\n\n<p>Serial port numbers are as follows:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">COMHMI   EQU   251  ;a virtual serial port that is the SimpleHMI interface to the touch screen<br>COM0     EQU   252  ;the TTL serial port<br>COM232   EQU   252  ;HMI700: real 232 port, shared with COM0<br>COM1     EQU   253  ;the TTL serial port<br>COM485   EQU   254  ;the RS485 port (may be used as Xwire via the XwirePhys 1 instruction)<br>COMUSB   EQU   255  ;the USB serial port (used by SPLat\/PC, but may be changed to user coms 10 seconds after your app starts)<br><\/pre>\n\n\n\n<p>A ready to use list of all HMI430 I\/O assignments is available here:<\/p>\n\n\n\n<div class=\"wp-block-buttons is-horizontal is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-499968f5 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-text-align-center wp-element-button\" href=\"https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2025\/04\/hmi430_io.spt\">Download hmi430_io.spt<\/a><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-horizontal is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-499968f5 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-text-align-center wp-element-button\" href=\"https:\/\/webprojects.cloud\/wordpress\/splatco\/wp-content\/uploads\/2025\/04\/hmi700_io.spt\">Download hmi700_io.spt<\/a><\/div>\n<\/div>\n\n\n\n<p>For specific information about these ports, please see the relevant pages below.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are 2 x TTL level serial ports and 1 x RS485 port on the HMI430\/700.&nbsp; The HMI700 also has a RS232 port that is&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1346,"menu_order":10,"template":"","class_list":["post-1381","spl_knowledgebase","type-spl_knowledgebase","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - 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