Please see the definition of Exculded Employee.
Proviso to Para 26A(2) clearly provide that the amount of contribution shall be restricted to Rs 6500/- only.
(2) Every member employed as an employee other than an excluded employee, in a factory or other establishment to which this Scheme applies shall contribute to the Fund, and the contribution shall be payable to the Fund in respect of him by the employer. Such contribution shall be in accordance with the rate specified in paragraph 29:
Provided that subject to the provisions contained in sub-paragraph (6) of paragraph 26 and in sub-paragraph (1) of paragraph 27, or sub-paragraph (1) of paragraph 27A, where the monthly pay of such a member exceeds 20[six thousand and five hundred rupees] the contribution payable by him, and in respect of him by the employer, shall be limited to the amounts payable on a monthly pay of 20[six thousand and five hundred rupees] including 21[dearness allowance, retaining allowance (if any) and cash value of food concession.]]