GXM7S-RS485 Datasheet, PDF (2/4 Pages) Baumer IVO GmbH & Co. KG – Absolute encoders - bus interfaces

Absolute encoders - bus interfaces
End shaft max. ø14 mm
Optical multiturn encoders 13 bit ST / 12 bit MT, RS485
GXM7S - RS485
Part number
GXM7S.
10
01
Interface
01 RS485
E-connection
A1 Connector M23, 12-pin, radial
21 Cable 1 m, radial
End shaft
0 End shaft ø12 mm without pin
1 End shaft ø12 mm with pin 15 mm
B End shaft ø12 mm with pin 9.5 mm
4 End shaft ø14 mm without pin
5 End shaft ø14 mm with pin 15 mm
F End shaft ø14 mm with pin 9.5 mm
Accessories
Connectors and cables
Z 130.001 Female connector M23, 12-pin, less cable
Z 130.003 Female connector M23, 12-pin, 2 m cable
Z 130.005 Female connector M23, 12-pin, 5 m cable
Z 130.007 Female connector M23, 12-pin, 10 m cable
Mounting accessories
Z 119.024 Torque support and spring washer for
encoders with 9.5 mm pin
Z 119.041 Torque support by rubber buffer element for
encoders with 15 mm pin
Z 119.050 Spring coupling
Z 119.053 Spring coupling height 19.1 mm
Z 119.070 Spring coupling height 29.1 mm
Z 119.072 Spring coupling for encoders with ø58 mm
housing, hole distance 73 mm
Z 119.073 Spring coupling for encoders with ø58 mm
housing, hole distance 68 mm
Z 119.076 Spring coupling for encoders with ø58 mm
housing
Z 119.082 Spring coupling for encoders with ø58 mm
housing, hole distance 63 mm
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
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
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