Pretty much, if you want a career in Industrial Wiring or Controls, these days you have to have a good grounding in PLC
Programming(Ladder logic, Statement programming,C++), the list goes on, just depends on what systems you use regularly, as not all systems use Ladder Logic, I have been on I don't know how many PLC traning courses, provided by the vendors of PLC's,
very helpful, these courses, even have hands-on experiments, to let you use the gear.
Get on to your Automation Rep!, these things do exist, you know.
Let's face it, these days if you're not young, you're old - Red Green