Modbus Protocol for PSBEN Power Supplies Edition: 1 from 30-08-2017 Supersedes the edition: ----- Strona 1 z 5
Contents 1. Revision history ............................................................................................................................... 3 2. The Modbus Protocol ...................................................................................................................... 3 3. Function codes ................................................................................................................................ 3 4. Registers ........................................
1. Revision history Version 1.0 Date 1.06.2017 Author BTR Changes Initial release 2. The Modbus Protocol The Modbus Protocol is an industrial communication protocol that is currently used in PSBEN Power Supplies. The Power Supplies use two type of connections: RS-485 - Modbus RTU (19200 kbps, 8E1 – default settings) TCP/IP - Modbus RTU over TCP 3. Function codes The following Modbus function codes are supported by the implemented protocol: Function code Read Input Registers Dec 04 4.
F04 - Output overload 3 1-bit 4 1-bit 5 1-bit 6 1-bit 7 1-bit 8 1-bit 9 1-bit 10 1-bit 11 1-bit 12 1-bit 13 1-bit 14 1-bit 15 1-bit 0 1-bit 1 1-bit 2 1-bit Led EXT 3 1-bit Led OVL 4 1-bit Led PSU 5 1-bit Led APS 6 1-bit Buzzer 7 1-bit Battery charging 0 1-bit Battery test in progress 2 1-bit Technical input EXT 3 1-bit Technical output APS 8 1-bit Technical output PSU 9 1-bit Technical output EPS 10 1-bit F04 - Output overload off F50 - Inter
09-11 Measurements 16 Power version 18 09 - Battery voltage 10 - AUX voltage 11 - AUX current 15…0 15…0 15…0 uint16_t uint16_t uint16_t Rated current 12…0 12-bit Rated voltage 13 1-bit EPS time settings EPS time 15…0 uint16_t 0,01 V 0,01 V 0,01 A R 0,01A 0 – 13,8 V 1 – 27,6 V R 0 – 5 seconds 1 – 20 seconds 2 – 17 minute 3 – 140 minute R 5.
