TAMAGAWA TS5019N60 TS5019N60 TS5019N60 TS5019N60 TS5019N60 TS5019N60 TS5019N60

TS3103N156

TS5019N60

TS5208N141E78

TS3684N1E3

TS3684N13E8

TS3617N1E3

TS3617N1E1

TS3617N1E2

TS3617N2E4

TS3630N11E1

TS3664N2E4

TS3653N13E7

TS3653N12E6

TS3653N2E5

TS3624N2E3

TS3653N13E9

TS3653N2E6

TS3653N3E7

TS3653N3E8

TS3653N3E9

TS1980N43E12

TS1980N56E12

TS1981N134E9

The freeze function "freezes" the actual encoder values of SM 338. The freeze function is
coupled to the digital inputs DI 0 and DI 1 of SM 338.
The freeze function is triggered by a signal transition (positive edge) a DI 0 or DI 1. Bit 31 = 1
(output address) identifies a frozen encoder value. You can freeze one, two or three encoder
values using one digital input.
Enable the freeze function by setting the corresponding parameters in STEP 7 .
To allows their event-triggered evaluation, the encoder values are retained until the freeze
function is terminated.
Terminating the freeze function
The freeze function must be terminated separately at each encoder input. You acknowledge
the function in the user program by using STEP 7 operation T PAB to set bit 0, 1 or 2 to "xyz"
according to the channel (Program example: refer to chapter "AUTOHOTSPOT").
The acknowledgement resets bit 31 of the corresponding encoder value, and initiates a
refresh of the encoder values. You can freeze the encoder values again after you cleared the
ACK bit at the output address of the module.
In isochronous mode, the acknowledgement is processed at the time To. From this point on,
you can freeze the encoder values again by setting the digital inputs.
Note
The Freeze function is acknowledged automatically when you assign new parameters with
different arguments to the relevant
channel (refer to chapter "AUTOHOTSPOT").
If the parameter are identical the Freeze function remains unaffected

Parametrization SM 338 POS-INPUT
You parameterize the SM 338; POS-INPUT in STEP 7. Always parameterize the module
while the CPU is in STOP mode.
After you completed the parameter assignment, download the parameters from the PG to the
CPU. At its next STOP → RUN transition, the CPU transfers the parameters to the SM 338.
New parameters can not be assigned by the user program.
Parameters of SM 338; POS-INPUT
The table below provides an overview of configurable parameters and defaults for the SM
338.
The defaults apply if you have not set any parameters in STEP 7 (default setting bold)
Enable
? Fast-Mode yes / no
Enable parameter.
Applies to all 3 channels.
Enable
? Diagnostic interrupt yes / no
Enable parameter.
Applies to all 3 channels.
Absolute value encoder (SSI)
1)
none; 13 bits; 21 bits; 25 bits none: The encoder input is switched off.
Code type 1) Gray; Binary Code returned by the encoder.
Baud rate 1.3) 125 kHz; 250 kHz; 500 kHz; 1 MHz Data transfer rate of the SSI position detection.
Observe the relationship between cable lengths
and the transmission rate (refer to chapter
"Technical data of SM 338; POS-INPUT
(Page 512)")