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Download Siemens IP-Module Specifications
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Z sign. t4 1) 2) 3) 4) Z sign. Z sign. Z sign. 4) Z sign. t4: min. 50 ns EWA 4NEB 811 6120-02a t5: max. 250 ns aaaaaaaa aaaaaaaa Z sign. aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa 1) Z sign. aaaaaaaa aaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa 2) aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa t5 aaaaaaaa aaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa B signal aaaaaaaaaa aaaaa 3) aaaaaaaaaaaa aaaaaaaaaaaa aaaaaaaaaaaa aaaaaaaaaaaa Z sign. t5 aaaaaaaa aaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa A signal aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa A signal aaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaa aaaaaaaaaa B signal aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa IP 240 Encoder Signals c) Position and timing of the Z signal: t5 t6 t5 t4 t6: min. 500 ns Position of the Z signal at minimal signal length Position of the Z signal when the Z signal corresponds to the A signal Position of the Z signal when the Z signal corresponds to the B signal Position of the Z signal at maximum signal length An edge steepness of at least 5 V/µs is required for all signals. Fig. 13-2. Timing Diagram for Symmetrical Incremental Encoders (Continued) If the encoder has no Z signal, the Z input of a symmetrical encoder must be applied to a 1 signal and the Z input to a 0 signal. Note The requirements regarding the position of the Z signal do not apply to IP 252 expansion mode, as neither reference point approach nor zero mark monitoring is possible in this mode. 13-3
