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Fail safe module.

7/6/2022 9:05 AM	Rate (0)
mr. problem Regular Member Joined: 4/26/2021 Last visit: 7/17/2025 Posts: 26 Rating: (3)	MY cpu is CPU 414-5 H PN/DP(6es7 414-5hm06-0ab0). I have few fail safe di F-DI 8x24VDC HF(6es7 136-6ba00-oca0) few fail safe AI(6es7-136-6aa00-0ca1) and few fail safe do (6es7 136-6dc00-0ca0) with et200sp (im155-6pn-2hf) When, digital signal come in fail safe module ,I can read signal ,that's ok but when signal is gone, The diag LED of sail safe module become red. I used cfc(F_CH_DI) block for reading signals. I make high 'ACK_NEC' and "ACK_REI" sothat red LED of module gone. But it did not work. What can I do?? Attachment f_di.png (763 Downloads)
	SML
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7/6/2022 10:04 AM	Rate (0)
Wit_Moderator Moderator Joined: 8/21/2014 Last visit: 12/19/2025 Posts: 1098 Rating: (15)	Closed cause question posted twice. The second thread with the subject Failsafe CPU 414-5 H PN/DP is published within the conference SIMATIC S7-400 / S7-400H / S7-400F /FH. Best regards The Helping Hand
	My Forum is the place to personalize your profile, track your topics, and maintain content that interests you. Best regards Wit_Moderator
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