Module in the kit
The 6ES7522-5HH00-0AB0: No special accessories needed for basic rack mounting; the module occupies standard S7-1500 slot spacing. Typical power loss is 5 W.
Diagnostics in detail
DQ (diagnostics qualified) means the module generates diagnostic alarms on channel faults. MSO (maintenance support) raises maintenance interrupts. Both are active here, minimizing blind troubleshooting. A red ERROR LED and yellow MAINT LED indicate state at a glance; each output channel has a green status LED. Isolation tested at 3 100 V DC between channels and between channels and backplane bus, and 707 V DC type test between L+ and backplane bus. Cable lengths: shielded up to 1 000 m, unshielded up to 600 m.