What is the punishment for denying access to the non custodial parent?

If the non-custodial parent is not barred from seeing the child, it would be VERY strange if the custody order(s) did not address visitation. If the custodial parent is denying the non-custodial parent court allowed access, then the custodial parent is in contempt of the court's order. My suggestion would be for the non-custodial parent to return to the court with this information - DO NOT attempt to 'force' the situation as it could wind up back-firing on you.