Changing EpicsSignal to PytmcSignal for plc value #881

Job	Run time
standard / pre-commit checks / pre-commit	15s
standard / Documentation / Python 3.9: documentation building	6m 9s
standard / Conda (3.10) / Python 3.10: conda	5m 23s
standard / Conda (3.11, true) / Python 3.11: conda	5m 6s
standard / Conda (3.12, true) / Python 3.12: conda	5m 11s
standard / Pip (3.10) / Python 3.10: pip	3m 9s
standard / Conda (3.9, true) / Python 3.9: conda	5m 26s
standard / Pip (3.11, true) / Python 3.11: pip	2m 48s
standard / Pip (3.12, true) / Python 3.12: pip	3m 11s
standard / Pip (3.9, true) / Python 3.9: pip	2m 56s
standard / Documentation / Documentation deployment	0s
	39m 34s

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