Output internal circuit terminal arrangement, Wiring examples, Ardware – IDEC SX5L Series User Manual
Page 18: Pecifications, Upper terminal block (sx9z-ss1), Lower terminal block (sx9z-ss2), Sx5l-sbt16s1, Sx5l-sbt16k1, Sx5l-sbt16s1 (minus common wiring), Sx5l-sbt16k1 (plus common wiring)