S7-1500 6ES7550-1AA00-0AB0 S7-1500, TM Count 2x24V S7-1500 6ES7552-1AA00-0AB0 S7-1500, TM Timer DIDQ 16x24V S7-1500 6ES7551-1AB00-0AB0 S7-1500, TM Posinput 2
