GXM7W-RS485 Datasheet, PDF (2/4 Pages) Baumer IVO GmbH & Co. KG – Absolute encoders - bus interfaces

Absolute encoders - bus interfaces
Shaft with clamping or synchro flange
Optical multiturn encoders 13 bit ST / 12 bit MT, RS485
GXM7W - RS485
Part number
GXM7W.
10
01
Interface
01 RS485
E-connection
A0 Connector M23, 12-pin, axial
A1 Connector M23, 12-pin, radial
11 Cable 1 m, axial
21 Cable 1 m, radial
Flange / Shaft
0 Clamping flange / ø10 mm IP 54
A Clamping flange / ø10 mm IP 65
1 Synchro flange / ø6 mm IP 54
B Synchro flange / ø6 mm IP 65
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 119.006 Eccentric fixing, single
Z 119.013 Adaptor plate for clamping flange for
modification into synchro flange
Z 119.015 Mounting adaptor for synchro flange
Z 119.017 Mounting angle for clamping flange
Z 119.035 Bearing flange for encoders with synchro
flange
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
2
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