TTL modeConnection of TTL encoders with or without zero pulseConnection of encoders in TTL mode with zero pulse in single-channel modeConnection instructionsIn TTL mode the inverse inputs are not connected.When using an encoder without zero pulse C, the module pins for the C track are not connected.Connection of TTL counters / pulse generators with or without zero pulseConnection of counters / pulse generators in TTL mode with zero pulse in single-channel modeConnection instructionsIn TTL mode the inverse inputs are not connected.If a counter / pulse generator is connected, the B track determines the counting direction.Input B̅ is not connected.When using a counter / pulse generator without zero pulse C, the module pins for the C track are not connected.