Symbols Symbol code to be added at the end of the catalogue number > STANDARD SYMBOLS ISO/DIN Description Symbol Cat. No. Continuous straight-line movement ISO 1 A01 Alternating straight-line movement ISO 5 A05 Continuous rotating movement clockwise ISO 7A - DIN 100 A07 Continuous rotating mov. anti-clockwise ISO 7B B07 Forward ISO 16 A16 Increase in value ISO 28 A28 Decrease in value ISO 29 A29 Adjustable ISO 62 A62 Clamp, block apply pressure ISO 63A A63 Clamp, block apply pressure ISO 63B B63 Unclamp, release ISO 64A A64 Unclamp, release ISO 64B B64 Brake ISO 65 A65 Release brake ISO 66 A66 Automatic cycle (or semi-automatic) ISO 67 A67 Manual control ISO 68 A68 "ON" close circuit ISO 69 A69 "STOP" close circuit ISO 70 A70 ON/OFF close + open circuit ISO 71 A71 Close circuit manual impulse ISO 72 A72 Clutch ISO 74 - DIN 46 A74 76