GXM7S-RS485

Absolute encoders - bus interfaces End shaft max. ø14 mm Optical multiturn encoders 13 bit ST / 12 bit MT, RS485 GXM7S - RS485 Features – Encoder multiturn / RS485 – Optical sensing – Resolution: singleturn 13 bit, multiturn 12 bit – End shaft ø12 mm / ø14 mm – Fieldbus protocol – Max. 4 bus users – Bus access according to master/slave principle Optional – Integration of customer-specific RS485 protocols GXM7S with end shaft Technical data - electrical ratings Voltage supply Consumption w/o load Initializing time (typ.) Interface Transmission rate User address Steps per turn Number of turns Absolute accuracy Sensing method Code Code sequence Output circuit Interference immunity Emitted interference Approval 10...30 VDC ≤50 mA (24 VDC) 250 ms after power on RS485 38.4 kBaud Coded by connection 8192 / 13 bit 4096 / 12 bit ±0.025° Optical Binary CW/CCW coded by connection RS485 DIN EN 61000-6-2 DIN EN 61000-6-4 UL approval / E63076 Weight approx. E-connection Reverse polarity protection Yes Technical data - mechanical design Housing Shaft Protection DIN EN 60529 Operating speed Starting torque Rotor moment of inertia Materials Operating temperature Relative humidity Resistance ø58 mm ø12 mm end shaft ø14 mm end shaft IP 54 ≤6000 rpm (mechanical) ≤6000 rpm (electric) ≤0.015 Nm IP 54 20 gcm² Housing: steel Flange: steel -25...+85 °C -40...+85 °C (optional) 95 % non-condensing Subject to modification in technic and design. Errors and omissions excepted. 13/11/2008 DIN EN 60068-2-6 Vibration 10 g, 16-2000 Hz DIN EN 60068-2-27 Shock 100 g, 6 ms 600 g Connector or cable 1 www.baumerivo.com www.baumerivo.com End shaft max. ø14 mm Optical multiturn encoders 13 bit ST / 12 bit MT, RS485 Absolute encoders - bus interfaces GXM7S - RS485 Part number GXM7S. 10 01 Interface 01 RS485 E-connection A1 Connector M23, 12-pin, radial 21 Cable 1 m, radial 0 1 B 4 5 F End shaft End shaft ø12 mm without pin End shaft ø12 mm with pin 15 mm End shaft ø12 mm with pin 9.5 mm End shaft ø14 mm without pin End shaft ø14 mm with pin 15 mm End shaft ø14 mm with pin 9.5 mm Accessories Connectors and cables Z 130.001 Z 130.003 Z 130.005 Z 130.007 Z 119.024 Z 119.041 Z 119.050 Z 119.053 Z 119.070 Z 119.072 Z 119.073 Z 119.076 Z 119.082 Female connector M23, 12-pin, less cable Female connector M23, 12-pin, 2 m cable Female connector M23, 12-pin, 5 m cable Female connector M23, 12-pin, 10 m cable Torque support and spring washer for encoders with 9.5 mm pin Torque support by rubber buffer element for encoders with 15 mm pin Spring coupling Spring coupling height 19.1 mm Spring coupling height 29.1 mm Spring coupling for encoders with ø58 mm housing, hole distance 73 mm Spring coupling for encoders with ø58 mm housing, hole distance 68 mm Spring coupling for encoders with ø58 mm housing Spring coupling for encoders with ø58 mm housing, hole distance 63 mm Mounting accessories Data transmission format Basic settings of RS485 serial interface • 1 start bit • 8 data bits (least significant bit first) • 1 stop bit • Parity none • Baud rate: 38.4 kBaud Structur of data fields Demand from master SOH 80h ADR 80h EOT Subject to modification in technic and design. Errors and omissions excepted. Reply of encoder SOH EAD MT_H MT_L ST_H ST_L LRC EOT Explanation SOH ADR EOT EAD MT_H MT_L ST_H ST_L LRC Value = 01h Address of encoder, value 02h - 05h Value = 04h Bit 0 - 3 response of encoder address (bit 4 -7 not defined) High byte revolution Low byte revolution High byte steps Low byte steps EAD XOR MT_H XOR M_T_L XOR ST_H XOR ST_L 2 www.baumerivo.com 13/11/2008 Absolute encoders - bus interfaces End shaft max. ø14 mm Optical multiturn encoders 13 bit ST / 12 bit MT, RS485 GXM7S - RS485 Terminal significance UB GND T,R IN T,R OUT Encoder voltage supply. Encoder ground connection relating to UB. Serial data lines. To avoid stub lines the data lines are guided outside on a pair of 2 wires. The arriving bus is on T,R+ IN and T,R- IN, the departing bus on T,R+ OUT und T,R-. If the encoder serves as bus termination or is the only user, only the pair of wires T,R+ IN and T,R- IN is utilized. Note: External connection of terminating resistor 150 Ω to final user. Input for setting a zero point anywhere within the programmed encoder resolution. The zero setting operation is triggered by a High impulse and has to be in line with the selected direction of rotation (UP/DOWN). Connect to GND after setting operation for maximum interference immunity. Impulse duration >100 ms. UP/DOWN counting direction input. This input is standard on High. UP/DOWN means ascending output data with clockwise shaft rotation when looking at flange. UP/DOWN-Low means ascending values with counterclockwise shaft rotation. Ident 1...2 are utilized for setting the en coder addresses (identifiers). Less poten tial the inputs are internally against UB (=“1“) by pull-up resistors what equals address 2. Address Ident 1 Ident 2 2 1 1 3 0 1 4 1 0 5 0 0 Terminal assignment Connector Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 Core colour brown black blue beige green yellow violet pink black/yellow – – Assingment UB GND T,R+ IN Ident 1 T,R- OUT Ident 2 T,R- IN T,R+ OUT Zero setting – – Please use cores twisted in pairs (for example T,R+ / T,R-) for extension cables of more than 10 m length. brown/yellow UP/DOWN Zero setting 8 7 6 5 12 91 10 11 2 3 4 UP/DOWN Ident 1...2 Trigger level Interface Data Control inputs Input level High Input level Low Input resistance Circuit Linedriver RS485 Input circuit >0.7 UB