Banner L-GAGE LT7 Series - Manual (Page 14)

L-GAGE® LT7 Long-Range Time-of-Flight Sensor
Banner Engineering Corp. • Minneapolis, MN U.S.A
www.bannerengineering.com • Tel: 763.544.3164
14
P/N 120244 Rev. B
RS422 Protocol
All commands via the RS422 serial interface have the following structure:
<STX><Command><[Data]><EOT>
The sensor answers all commands as follows:
<NAK> = the command was not recognized or the data is outside
the limit values.
or
<ACK> = the command was recognized and executed; the command
requires no return data.
or
<Data> = the command was recognized and the requested data has
been sent.
RS422 Cable
The RS422 interface is defined as a reliable, serial interface in full duplex mode, with
transfer rates up to 10 MBaud; max. cable length 1,000 m (4,000'). The shielded cable is
connected to the sensor connector and the ground terminal of the control cabinet.
RS422 User Commands and Their Meanings
Command Data to LT7* Data from LT7 Meaning
GAP
All parameters in text format:
Get All Parameters
All sensor parameters are displayed:
LT7 $Revision x.xx$ • Sensor software revision (number)
Pilot laser status • Pilot laser status (ON/OFF/xx seconds ON)
Serial settings • Serial settings (see page 13)
Discrete Output Q1 settings • Discrete output condition
ON: Output high
OFF: Output low
Output mode (see IM1, IM2)
Limit 1 setting (see IL1, IL2)
Limit 2 setting (see IL4, IL5)
Hysteresis (see IH1, IH2)
Invert status (ON/OFF; see IN1, IN2)
Discrete Output Q2 settings
Analog Output QA settings • Analog output condition (Diffuse sensors only)
Value (0 to 4095)
Limit 1 setting (see IL3)
Limit 2 setting (see IL6)
Invert status (ON/OFF; see INA)
Output status • Output unit of measure (mm or hundredth inch “10MIL”)
Offset status • Offset setting (in mm or hundredth inch)
Password setting • Password (enabled/disabled)
Error status • Error status (see GSI)
ECM — ACK
Execute Continuous Measurement
Set and triggered by the next request for measured values
GDB — Energy value — 0 to -120dB
Gain Level
Indicates the amount of receiving energy
GNR — xxxxxxxxxx
Get Serial Number
Emitted as ASCII text (max. 24 characters)
Definitions:
STX: start transmission (hex 02 or CTRL B)
EOT: end of text (hex 04 or CTRL D)
NAK: no acknowledgement (hex 15 or CTRL U)
ACK: acknowledge (hex 06 or CTRL F)
Command: 3-digit command (ASCII text)
[Data]: whole numbers (ASCII text)
In ASCII text (command + data), spaces and
capitals/small letters are ignored.