UCC T3 installation guide
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Scale inputs
Provides RS422 compatible scale inputs for each of the machine axes through the 15 W HDD connectors.
NOTE: If the machine scale is of a different format (e.g. analogue, single-ended), then this will require an external adaptor.
Pin number
1
2
3
4
5
6
7
8
Scale supply voltage is 5.25 V at 350 mA from each readhead connector. Scale quadrature signals with ideal waveforms and phase
displacement with an edge rate of up to 40 MHz.
Scale input signals to be to EIA specification RS-422:
UCC T3 input circuits for CMM readhead - scale and reference mark inputs
Issued 04 2019
Function
External N/C
0 V supply
- Error
- Reference mark
- B signal
- A signal
+ 5.25 V supply
Reserved
Pin number
9
10
11
12
13
14
15
Shell
Function
+ Error / limit switch Q
Limit switch P
+ Reference mark
+ B signal
+ A signal
Inner screen
36